CN106998573B

CN106998573B - Load equalization method and device in a kind of carrier aggregation system

Info

Publication number: CN106998573B
Application number: CN201610049277.2A
Authority: CN
Inventors: 齐丙花; 刘蓉; 张超; 徐明宇
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-01-25
Filing date: 2016-01-25
Publication date: 2019-09-17
Anticipated expiration: 2036-01-25
Also published as: CN106998573A

Abstract

The invention discloses the load equalization methods and device in a kind of carrier aggregation system, for solving the problems, such as that carrying out load balancing using fast transfer mode in the prior art will lead to the interruption of customer service.Method includes: within each load balancing period, determine to need to carry out source equilibrium cell and the load balancing direction of load balancing, and from the corresponding member carrier cell of source equilibrium cell, at least one target equilibrium cell that the load balancing of source equilibrium cell is arrived is determined；Source equilibrium cell is determined on load balancing direction, needs the first load shifted to each target equilibrium cell；According to corresponding first load of each target equilibrium cell, from the polymerization of support load balancing direction carrier wave and with source equilibrium cell in the user equipment of PCell, at least one user equipment is selected, and load of the selected user equipment in source equilibrium cell is transferred on the SCell of selected user equipment.

Description

Load equalization method and device in a kind of carrier aggregation system

Technical field

Load equalization method and dress the present invention relates to field of communication technology, in particular in a kind of carrier aggregation system It sets.

Background technique

In order to improve system transfer rate, meet the peak-rate requirements of user, in the long term evolution (Long of enhancing Term Evolution Advanced, abbreviation LTE-A) carrier wave polymerization (Carrier Aggregation, letter are introduced in system Claim CA) technology, that is, the mode for polymerizeing the member carrier (Component Carrier, abbreviation CC) of multiple small bandwidth is used, it will System bandwidth is extended to a bigger system bandwidth.

In LTE-A CA system, a base station necessarily configures the member carrier of multiple and different frequency ranges, forms completely same cover Lid, concentric circles size circuit covering or non-concentric partly overlap the networking scenes such as covering.In these CA covering scenes, exist Multiple member carriers, and both there may be the terminal that Rel-8/9 version does not support carrier wave to polymerize on each member carrier, it can also There can be the terminal that Rel-10 and Rel-10 or more version supports carrier wave polymerization.

In order to realize the equilibrium of load, in LTE Rel-8/9 in frequency single layer network or LTE dual carrier hierarchical network, It needs to do different equalization operations in the user of Idle state and connected state.It is specific: for the terminal of Idle state, Ke Yitong Cross the equilibrium that the means such as adjustment cell selection/reselection parameter, frequency priority realize load；For the terminal of connected state, work as net Between the neighboring community Luo Zhong or between overlapping coverage cell in the unbalanced situation of load, the main means using switching by load compared with Part terminal in weight cell, which is transferred in the lesser cell of load, to be serviced, to realize the load balancing of minizone.

It in the prior art, can be by mobile negative for LTE Rel-8/9 with the connected state user in frequency single layer network Lotus equilibrium (Mobility Load Balancing, abbreviation MLB) strategy realizes load balancing.For LTE dual carrier hierarchical network In connected state user, load balancing can be realized by the balance policy that is switched fast.It (does not need to measure by being switched fast Report) mode to it is same covering or part with the connected state in coverage cell terminal carry out load adjustment.However, using quickly cutting The mode of changing, which carries out load balancing, will lead to the interruption of customer service, or even it is also possible to lead to call drop and handover failure, to network Performance indicator and user experience influence bigger.

Summary of the invention

It is existing for solving the embodiment of the invention provides the load equalization method and device in a kind of carrier aggregation system Carrying out load balancing using fast transfer mode in technology will lead to the interruption of customer service, or even it is also possible to cause call drop and The problem of handover failure.

In a first aspect, the load equalization method in a kind of carrier aggregation system, this method comprises:

Within each load balancing period, determine that the source equilibrium cell for needing to carry out load balancing and the source are balanced The load balancing direction of cell, and from the corresponding member carrier cell of the source equilibrium cell, determine that the source is balanced At least one target equilibrium cell that the load balancing of cell is arrived；

Determine the source equilibrium cell needs to shift to each target equilibrium cell on the load balancing direction the One load；

According to corresponding first load of each target equilibrium cell, from support the polymerization of load balancing direction carrier wave and Using the source equilibrium cell in the user equipment of main plot PCell, to select at least one user equipment, and by selected use Family equipment is on the secondary cell SCell that the load in the source equilibrium cell is transferred to selected user equipment, so that often The accumulative load received of a target equilibrium cell reaches corresponding first load of target equilibrium cell, wherein for institute The user device configuration that selects and the SCell activated are at least one of the target equilibrium cell determined.

In possible implementation, within each load balancing period, the source for needing to carry out load balancing equilibrium is determined The load balancing direction of cell and the source equilibrium cell, comprising:

The cell that uplink load amount is greater than the absolute thresholding of setting is determined as the source equilibrium cell, and is determined described Load balancing direction is uplink；Or downlink load amount is greater than the cell of the absolute thresholding to be determined as the source equilibrium small Area, and determine that the load balancing direction is downlink；

Or

It determines that uplink load amount is greater than the cell of the absolute thresholding of setting, the highest cell of uplink load amount is determined as The source equilibrium cell, and determine that the load balancing direction is uplink；Or determine that downlink load amount is greater than setting The cell of absolute thresholding, is determined as the source equilibrium cell for the highest cell of downlink load amount, and determine that the load is equal Weighing apparatus direction is downlink.

In possible implementation, if the uplink load amount and downlink load amount of any cell are all larger than the absolute door Limit, determines the load balancing direction of the source equilibrium cell, comprising:

By the corresponding load balancing direction of maximum value in the uplink load amount and downlink load amount of any cell, determine For the load balancing direction of the source equilibrium cell.

In possible implementation, from the corresponding member carrier cell of the source equilibrium cell, determine that the source is equal The target equilibrium cell that the load balancing of weighing apparatus cell is arrived, comprising:

From the corresponding member carrier cell of the source equilibrium cell, select on the load balancing direction load by from The small member carrier cell that top n is come to big sequence, as candidate target equilibrium cell, wherein N is more than or equal to 1 Integer；

From N number of candidate target equilibrium cell, load and setting of the load lower than the source equilibrium cell are selected Minimum value in high load capacity thresholding, and the difference of the load of load cell balanced with the source is greater than the relative threshold of setting Candidate target equilibrium cell, as target equilibrium cell.

In possible implementation, determine that the source equilibrium cell is needed on the load balancing direction to each target First load of balanced cell transfer, comprising:

According to the load phase of load balancing opisthogenesis equilibrium cell and target equilibrium cell on the load balancing direction Deng principle, determine what the source equilibrium cell can be balanced to each target equilibrium cell on the load balancing direction Second load；And it is less than or waits according to load of the target equilibrium cell after load balancing on the load balancing direction In the principle of the high load capacity thresholding of setting, determine that each target equilibrium cell allows the source on the load balancing direction The third load that balanced cell is shifted to the target equilibrium cell；

For each target equilibrium cell, from second load and the third load, selective value is the smallest Load is determined as the source equilibrium cell needs to shift to the target equilibrium cell on the load balancing direction first Load.

In possible implementation, it is from the polymerization of support load balancing direction carrier wave and with the source equilibrium cell In the user equipment of PCell, at least one user equipment is selected, comprising:

From first set, at least one user equipment is selected, so as to displaced selected user equipment in the source It is corresponding that the load that each target equilibrium cell receives after load in balanced cell reaches the target equilibrium cell First load；

It wherein, include supporting up direction under in the first set if the load balancing direction is up direction The carrier wave polymerization of line direction, with the source equilibrium cell for PCell and at least one configured target equilibrium cell is described The up direction of user equipment and the SCell of down direction but the user equipment for not yet activating SCell, and support up direction With the polymerization of the carrier wave of down direction, with the source equilibrium cell for PCell and at least one configured target equilibrium cell is The user equipment of the SCell of the down direction of the user equipment；

It include the carrier wave at least supporting down direction in the first set if the load balancing direction is down direction Polymerization, with the source equilibrium cell for PCell and at least one configured target equilibrium cell is the user equipment SCell but the user equipment for not yet activating SCell.

In possible implementation, after selecting at least one user equipment, by selected user equipment in the source Before load in balanced cell is transferred on the SCell of selected user equipment, further includes:

If the load balancing direction is up direction, configured for what is selected from the first set at least one A target equilibrium cell is the up direction of the user equipment and the SCell of down direction but not yet activates the user of SCell Equipment activates the SCell of selected user equipment；Or configured at least one for what is selected from the first set A target equilibrium cell is the user equipment of the SCell of the down direction of the user equipment, is reconfigured by RRC to selected The SCell of user equipment carry out reconfiguring for up direction and down direction, and activate the user equipment after reconfiguring SCell；

If the load balancing direction is down direction, to the user equipment selected from the first set, institute is activated The SCell of the user equipment of selection.

In possible implementation, it is from the polymerization of support load balancing direction carrier wave and with the source equilibrium cell In the user equipment of PCell, at least one user equipment is selected, further includes:

If displaced all user equipmenies in the first set after the load in the source equilibrium cell, still There are the accumulative load received of at least one target equilibrium cell to be not up to corresponding first load of target equilibrium cell Amount, from second set, selects at least one user equipment, so that selected user equipment is in the source equilibrium cell The sum of load is greater than or equal to remaining balanced load amount of the source equilibrium cell on the load balancing direction, wherein Remaining balanced load amount of the source equilibrium cell on the load balancing direction is each target equilibrium cell corresponding the The sum of one load subtracts the load that each received load of target equilibrium cell obtains；

It wherein, include supporting up direction under in the second set if the load balancing direction is up direction The carrier wave polymerization of line direction, with the source equilibrium cell be PCell, not yet configuration either objective equilibrium cell is that the user sets Standby SCell and the user equipment for not yet reporting A2 measurement report, and support that the carrier wave of up direction and down direction is poly- Close, with the source equilibrium cell be PCell, not yet configuration either objective equilibrium cell be the user equipment SCell and on The user equipment of A2 measurement report is reported；

It include the carrier wave at least supporting down direction in the second set if the load balancing direction is down direction Polymerization, with the source equilibrium cell be PCell, not yet configuration either objective equilibrium cell be the user equipment SCell and The user equipment of A2 measurement report is not reported, and is at least supported the carrier wave polymerization of down direction, is with the source equilibrium cell PCell, not yet configuration either objective equilibrium cell are the SCell of the user equipment and have reported the user of A2 measurement report Equipment.

If the load balancing direction is up direction, not yet A2 is reported to measure for what is selected from the second set The user equipment of report configures selected user equipment and carries out SCell measurement, according to the survey of selected user equipment to report Amount report, the target equilibrium cell for selecting current load amount minimum from the target equilibrium cell for meet SCell configuration condition are made For the SCell of selected user equipment, the weight of up direction and down direction is carried out to the SCell of selected user equipment Configuration, and activate the SCell of the user equipment after reconfiguring；A2 measurement report has been reported for what is selected from the second set The user equipment of announcement, it is balanced from the target for meeting SCell configuration condition according to the measurement report of selected user equipment to report SCell of the target equilibrium cell for selecting current load amount minimum in cell as selected user equipment, to selected The SCell progress up direction of user equipment and reconfiguring for down direction, and activate the user equipment after reconfiguring SCell；

If the load balancing direction is down direction, not yet A2 is reported to measure for what is selected from the second set The user equipment of report configures selected user equipment and carries out SCell measurement, according to the survey of selected user equipment to report Amount report, the target equilibrium cell for selecting current load amount minimum from the target equilibrium cell for meet SCell configuration condition are made For the SCell of selected user equipment, down direction is carried out to the SCell of selected user equipment and is reconfigured, and activated The SCell of user equipment after reconfiguring；The user of A2 measurement report has been reported to set for what is selected from the second set It is standby, according to the measurement report of selected user equipment to report, selected from the target equilibrium cell for meeting SCell configuration condition SCell of the minimum target equilibrium cell of current load amount as selected user equipment, to selected user equipment SCell carries out down direction and reconfigures, and activates the SCell of the user equipment after reconfiguring.

In possible implementation, this method further include:

If displaced all user equipmenies in the second set after the load in the source equilibrium cell, institute The difference for stating the absolute thresholding of remaining load and setting of the equilibrium cell in source on the load balancing direction is less than setting Offset selects at least one user equipment from third set, until the source equilibrium cell is in the load balancing direction On remaining load be less than or equal to setting absolute thresholding or the source equilibrium cell on the load balancing direction Remaining balanced load amount be 0 or selected all user equipmenies in the third set, wherein the source equilibrium is small Area is that the source equilibrium cell is initial on the load balancing direction in the remaining load on the load balancing direction Load subtracts the load that selected user equipment obtains after the load of the source equilibrium cell；

It wherein, include not supporting the load equal in the third set if the load balancing direction is up direction The carrier wave in weighing apparatus direction polymerize but supports the opposite direction carrier wave in the load balancing direction to polymerize, is with the source equilibrium cell PCell and at least one configured target equilibrium cell are opposite direction of the user equipment in the load balancing direction On SCell but still unactivated user equipment；The carrier wave in the load balancing direction is not supported to polymerize but support the load The opposite direction carrier wave of equilibrium direction polymerize or do not support carrier wave polymerization, be PCell with the source equilibrium cell, not yet configure it is any Target equilibrium cell is the SCell of the user equipment and does not report the user equipment of A2 measurement report；The load is not supported The carrier wave of equilibrium direction polymerize but the opposite direction carrier wave in the load balancing direction is supported to polymerize or do not support carrier wave polymerization, with institute State source equilibrium cell be PCell, not yet configuration either objective equilibrium cell be the SCell of the user equipment and reported A2 The user equipment of measurement report；The carrier wave in the load balancing direction is not supported to polymerize but support the anti-of the load balancing direction The polymerization of direction carrier wave, with the source equilibrium cell be PCell, at least one configured target equilibrium cell is the user equipment SCell and activated user equipment on the opposite direction in the load balancing direction；

It include not supporting carrier wave polymerization, with described in the third set if the load balancing direction is down direction Equilibrium cell in source is PCell and does not report the user equipment of A2 measurement report；Carrier wave is not supported to polymerize, is small with the source equilibrium Area is PCell and has reported the user equipment of A2 measurement report.

At least one configured for what is selected from the third set target equilibrium cell is the user equipment The user equipment of SCell on the opposite direction in the load balancing direction, determines the configured of selected user equipment The load that is had received on the opposite direction in the load balancing direction of target equilibrium cell be less than the target equilibrium cell Allow received 4th load on the opposite direction in the load balancing direction, alien frequencies is carried out to selected user equipment and is cut Processing is changed, selected user equipment is switched on its SCell；

Either objective equilibrium cell is not configured as the SCell of the user equipment for what is selected from the third set User equipment, judged selected according to the measurement report received for selected user device configuration different-frequency measure User equipment meets alien frequencies switching condition, and either objective equilibrium cell has received on the opposite direction in the load balancing direction To load be less than the either objective equilibrium cell allow the received 4th on the opposite direction in the load balancing direction Selected user equipment is switched to the either objective equilibrium cell by load.

In possible implementation, this method further include:

Determine that each target equilibrium cell allows received 4th load on the opposite direction in the load balancing direction.

In possible implementation, determine that each target equilibrium cell allows on the opposite direction in the load balancing direction Received 4th load, comprising:

Negative side for each target equilibrium cell, according to the target equilibrium cell after equilibrium in the load balancing direction Upward load is less than or equal to the principle of the high load capacity thresholding of setting, determines that the target equilibrium cell allows the source The 5th load that balanced cell is shifted to the target equilibrium cell；According to target equilibrium cell in the load balancing direction Opposite direction on load be less than or equal to setting absolute thresholding principle, determine that the target equilibrium cell allows to connect The 6th load received；It is equal according to load of the target equilibrium cell on the opposite direction in the load balancing direction and the source The difference of load of the cell that weighs on the opposite direction in the load balancing direction is less than or equal to the original of the relative threshold of setting Then, determine that the target equilibrium cell allows received 7th load；

According to the 5th load, the 6th load and the 7th load, determine that the target is balanced Cell allows received 4th load on the opposite direction in the load balancing direction.

In possible implementation, according to the 5th load, the 6th load and the 7th load, press According to following formula, it is the received 4th negative to determine that the target equilibrium cell allows on the opposite direction in the load balancing direction Lotus amount:

Wherein, Δ_{1_i}Indicate corresponding 4th load of i-th of target equilibrium cell, Δ_{1,1_i}Indicate that i-th of target is balanced Corresponding 5th load of cell, Δ_{2,1_i}Indicate corresponding 6th load of i-th of target equilibrium cell, Δ_{3,1_i}Indicate i-th Corresponding 7th load of a target equilibrium cell, Eff_CC1Indicate the source equilibrium cell in the anti-of the load balancing direction The cell spectrum efficiency in direction, Eff_CCiIndicate i-th of target equilibrium cell in the cell of the opposite direction in the load balancing direction Spectrum efficiency, N_{PRB_CC1}Indicate that the source equilibrium cell can use of PRB in the bandwidth of the opposite direction in the load balancing direction Number, N_{PRB_CCi}Indicate that i-th of target equilibrium cell can use the number of PRB, i in the bandwidth of the opposite direction in the load balancing direction =2 ..., L+1, wherein the total number of L expression target equilibrium cell.

In possible implementation, if the number M of the user equipment selected from the second set₂> 0, and from described The number M of the user equipment of three Resource selections₃=0, then the total number M of selected user equipment are as follows: M=M₁+MIN(M₂*α, M_{2_final}), wherein M₁Number for the user equipment selected from the first set, α be setting amplification factor, α >=1, M_{2_final}Total number for the user equipment for including in the second set；

If the number M of the user equipment selected from the second set₂> 0, and set from the user of the third Resource selection Standby number M₃> 0, then the total number M of selected user equipment are as follows: M=M₁+M₂+MIN(M₂*(α-1)+M₃*α,M_{3_final}), Wherein, M_{3_final}Total number for the user equipment for including in the third set.

Second aspect, the load balancing device in a kind of carrier aggregation system, the device include:

First processing module, within each load balancing period, determining the source for needing to carry out load balancing equilibrium The load balancing direction of cell and the source equilibrium cell, and from the corresponding member carrier cell of the source equilibrium cell In, determine at least one target equilibrium cell that the load balancing of the source equilibrium cell is arrived；

Second processing module, for determining that the source equilibrium cell needs on the load balancing direction to each target First load of balanced cell transfer；

Third processing module is used for according to corresponding first load of each target equilibrium cell, from the support load Equilibrium direction carrier wave polymerize and using the source equilibrium cell as in the user equipment of main plot PCell, selects at least one user Equipment, and load of the selected user equipment in the source equilibrium cell is transferred to the auxiliary of selected user equipment On cell SCell, so that the accumulative load received of each target equilibrium cell reaches the target equilibrium cell corresponding the One load, wherein for selected user device configuration and activate SCell be in the target equilibrium cell determined extremely It is one few.

In possible implementation, first processing module is specifically used for:

Or

In possible implementation, first processing module is specifically used for:

In possible implementation, Second processing module is specifically used for:

In possible implementation, third processing module is specifically used for:

In possible implementation, third processing module is also used to:

In possible implementation, Second processing module is also used to

In possible implementation, Second processing module is specifically used for:

In possible implementation, Second processing module determines the target equilibrium cell in institute according to following formula Stating allows received 4th load on the opposite direction in load balancing direction:

The third aspect, a kind of base station, the base station include transceiver and at least one processing connecting with the transceiver Device, in which:

Processor is performed the following operations for reading the program in memory:

Within each load balancing period, determine that the source equilibrium cell for needing to carry out load balancing and the source are balanced The load balancing direction of cell, and from the corresponding member carrier cell of the source equilibrium cell, determine that the source is balanced At least one target equilibrium cell that the load balancing of cell is arrived；Determine the source equilibrium cell on the load balancing direction Need the first load shifted to each target equilibrium cell；According to corresponding first load of each target equilibrium cell, From the polymerization of support load balancing direction carrier wave and using the source equilibrium cell as in the user equipment of main plot PCell, select It selects at least one user equipment, and load of the selected user equipment in the source equilibrium cell is transferred to selected User equipment secondary cell SCell on so as to reach the target equal for the accumulative load received of each target equilibrium cell Corresponding first load of the cell that weighs, wherein the SCell for selected user device configuration and activation is the target determined At least one of balanced cell；

Transceiver, for sending and receiving data under the control of the processor.

In possible implementation, the processing implement body is executed:

Or

In possible implementation, the processing implement body is executed:

In possible implementation, the processor is also executed:

In possible implementation, the processing implement body is executed:

In possible implementation, the processor determines the target equilibrium cell described according to following formula Allow received 4th load on the opposite direction in load balancing direction:

In method and apparatus provided in an embodiment of the present invention, when determining that source equilibrium cell needs to carry out load balancing, benefit With supporting the user equipment of carrier wave polymerization to may exist the characteristics of multiple serving cells, load preferentially is carried out by non-switching means It is balanced, it may be assumed that the configuration and activation of the preferential SCell for carrying out user equipment, later by by selected user equipment described Load in source equilibrium cell is transferred to the SCell of selected user equipment, to realize that source equilibrium cell is equal to target The load transfer for the cell that weighs.Due to carrying out load balancing using non-switching means, reduce during load balancing The call drop probability of user, avoids service disconnection, improves the business experience of user, reduces load balancing to network KPI's It influences.

Detailed description of the invention

Fig. 1 is the process signal of the load equalization method in a kind of carrier aggregation system that the embodiment of the present invention one provides Figure；

Fig. 2 is the process signal of the load equalization method in another carrier aggregation system provided by Embodiment 2 of the present invention Figure；

Fig. 3 is the application scenarios schematic diagram of the embodiment of the present invention three；

Fig. 4 is the application scenarios schematic diagram of the embodiment of the present invention four；

Fig. 5 is the schematic diagram of the load balancing device in a kind of carrier aggregation system that the embodiment of the present invention five provides；

Fig. 6 is a kind of schematic diagram for base station that the embodiment of the present invention six provides.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.

The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.It should be appreciated that described herein Embodiment only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.

In the embodiment of the present invention one, the load equalization method in a kind of carrier aggregation system is provided, as shown in Figure 1, should Method comprises the following processes:

S11, within each load balancing period, determine the source equilibrium cell for needing to carry out load balancing and the source The load balancing direction of balanced cell, and from the corresponding member carrier cell of the source equilibrium cell, determine the source At least one target equilibrium cell that the load balancing of balanced cell is arrived.

In this step, the source equilibrium cell for determining to need to carry out load balancing and the source equilibrium cell are not limited Load balancing direction and determine at least one target equilibrium cell that the load balancing of the source equilibrium cell is arrived the two Step executes sequence.

In the embodiment of the present invention, within each load balancing period, the load balancing on a direction is only executed.

S12, the source equilibrium cell is determined on the load balancing direction, need to shift to each target equilibrium cell The first load.

S13, according to corresponding first load of each target equilibrium cell, from supporting load balancing direction carrier wave poly- It closes and using the source equilibrium cell to select at least one user in the user equipment of main plot (Primary Cell, PCell) Equipment, and load of the selected user equipment in the source equilibrium cell is transferred to the auxiliary of selected user equipment In cell (Secondary Cell, SCell), so that the accumulative load received of each target equilibrium cell reaches the target Corresponding first load of balanced cell, wherein for selected user device configuration and the SCell that activates is the mesh determined Mark at least one of balanced cell.

In the embodiment of the present invention, when determining that source equilibrium cell needs to carry out load balancing, support carrier wave polymerization is utilized User equipment may exist the characteristics of multiple serving cells, preferentially carry out load balancing by non-switching means, it may be assumed that preferential to carry out The configuration and activation of the SCell of user equipment, later by the way that selected user equipment is negative in the source equilibrium cell Lotus amount is transferred to the SCell of selected user equipment, so that the load for realizing source equilibrium cell to target equilibrium cell turns It moves.Due to carrying out load balancing using non-switching means, the call drop probability of user is reduced during load balancing, Service disconnection is avoided, the business experience of user is improved, reduces influence of the load balancing to network KPI.

In an implementation, in S11 within each load balancing period, the source equilibrium cell for needing to carry out load balancing is determined And the load balancing direction of the source equilibrium cell, including the optional mode of following two:

Mode 1, using distributed method determine, specifically:

The cell that uplink load amount is greater than the absolute thresholding of setting is determined as the source equilibrium cell, and is determined described Load balancing direction is uplink；Or downlink load amount is greater than the cell of the absolute thresholding to be determined as the source equilibrium small Area, and determine that the load balancing direction is downlink.

In which, judged only for the load of each cell, if the cell uplink load or downlink load The absolute thresholding that amount is greater than setting (is denoted as P_th_absolute), then it is assumed that the cell is born within this load balancing period Lotus is balanced, that is, thinks that the cell is source equilibrium cell.And using the highest direction of the load of the cell as load balancing direction. In which, the source equilibrium cell determined may be simultaneously present multiple.

It optionally,, will if its uplink load and downlink load amount are all larger than the absolute thresholding for any cell The corresponding load balancing direction of maximum value, it is equal to be determined as the source in the uplink load amount and downlink load amount of any cell The load balancing direction for the cell that weighs.

Further, if the uplink load amount of each cell be respectively less than or the cell equal to the absolute thresholding of setting and downlink it is negative Lotus amount is respectively less than or is equal to the absolute thresholding, determines and source equilibrium cell is not present, then without negative in this load balancing period Lotus is balanced.

Mode 2, using centralized approach determine, specifically:

Which frequently adjusts in order to avoid the load of minizone, and a cell is only selected in a load balancing period As source equilibrium cell, that is, selects uplink load amount highest and its uplink load is higher than the absolute thresholding of setting and (is denoted as P_ th_absolute) cell or downlink load amount highest and its downlink load amount be higher than P_th_absoluteCell as source equilibrium Cell.

In an implementation, in S11 within each load balancing period, from the corresponding member carrier cell of the source equilibrium cell In, it is when determining at least one target equilibrium cell that the load balancing of the source equilibrium cell is arrived, source equilibrium cell is corresponding Multiple member carrier cells as candidate target equilibrium cell, and unified consider multiple member carrier cells in load balancing side Upward load, to determine target equilibrium cell, specifically:

From N number of candidate target equilibrium cell, load and setting of the load lower than the source equilibrium cell are selected High load capacity thresholding (is denoted as P_th_high) in minimum value, and the difference of the load of load cell balanced with the source is greater than The relative threshold of setting (is denoted as P_th_relative) candidate target equilibrium cell, as target equilibrium cell.

Further, target equilibrium cell if it does not exist, then without load balancing in this load balancing period.

In an implementation, determine that the source equilibrium cell on the load balancing direction, needs equal to each target in S12 First load of the cell that weighs transfer, comprising:

According to the load phase of load balancing opisthogenesis equilibrium cell and target equilibrium cell on the load balancing direction Deng principle, determine what the source equilibrium cell can be balanced to each target equilibrium cell on the load balancing direction Second load；And it is less than or waits according to load of the target equilibrium cell after load balancing on the load balancing direction In the principle of the high load capacity thresholding of setting, each target equilibrium cell is determined on the load balancing direction, described in permission The third load that equilibrium cell in source is shifted to the target equilibrium cell；

For each target equilibrium cell, from second load and the third load, selective value is the smallest Load is determined as the source equilibrium cell on the load balancing direction, need to shift to the target equilibrium cell the One load.

In the embodiment of the present invention, does not limit and determine the second load and determine that third load executes sequence.

For example, source equilibrium cell is denoted as CC₁, target equilibrium cell is denoted as CC_i, i=2 ..., L+1, for described negative Lotus equilibrium direction is up direction, and the determination process of the first load is as follows:

The first load according to load balancing opisthogenesis equilibrium cell and target equilibrium cell on the load balancing direction Equal principle determines that the source equilibrium cell in the upstream direction can be negative to the uplink of each target equilibrium cell equilibrium Lotus amount (i.e. the second load) Δ_{1,1_i,ul}.It is specific:

Wherein, P_{UL_CCi}For the uplink load amount of target equilibrium cell CCi, Eff_{UL_CCi}For the upper of target equilibrium cell CCi Row cell spectrum efficiency, N_{UL_PRB_CCi}PRB sum, i=2 ..., L+1 can be used for the upstream bandwidth of target equilibrium cell CCi.

L formula of simultaneous can be derived by source equilibrium cell CC₁To target equilibrium cell CC_i(i=2 ..., L+1) on It can be to the Δ of each target equilibrium cell equilibrium on line direction_{1,1_i,ul}, i.e.,Wherein,

Then, consider target equilibrium cell CC₂,…,CC_L+1Load bearing capacity, it is balanced according to target after load balancing The load of cell in the upstream direction is less than or equal to the principle of the high load capacity thresholding of setting, and target equilibrium can be calculated Cell CC_i(i=2 ..., L+1) allow source equilibrium cell CC in the upstream direction₁The uplink balanced load amount (i.e. the shifted to it Three load) Δ_{2,1_i,ul}Are as follows:

Finally, being based on Δ obtained above_{1,1_i,ul}And Δ_{2,1_i,ul}, source equilibrium cell CC on available up direction₁It can With to target equilibrium cell CC_i(i=2 ..., L+1) balanced load (i.e. the first load) Δ_{Ul, 1_i}Are as follows: Δ_{Ul, 1_i}= min(Δ_{1,1_i,ul},Δ_{2,1_i,ul})。

It is down direction for the load balancing direction, the determination process of the first load is as follows:

The first load according to load balancing opisthogenesis equilibrium cell and target equilibrium cell on the load balancing direction Source equilibrium cell CC can be calculated in equal principle₁To target equilibrium cell CC_i(i=2 ..., L+1) it respectively should be balanced Downlink load amount (i.e. the second load) Δ_{1,1_i,dl}.It is specific:

Wherein, P_{DL_CCi}For the downlink load amount of target equilibrium cell CCi, Eff_{DL_CCi}For under target equilibrium cell CCi Row cell spectrum efficiency, N_{DL_PRB_CCi}PRB sum, i=2 ..., L+1 can be used for the downlink bandwidth of target equilibrium cell CCi.

L formula of simultaneous can be derived by source equilibrium cell CC₁To target equilibrium cell CC_i(i=2 ..., L+1) under Balanced Δ is needed on line direction_{1,1_i,dl}Are as follows:Wherein,

Then, consider CC₂,…,CC_L+1Load bearing capacity, according to target equilibrium cell after load balancing described negative Load on lotus equilibrium direction is less than or equal to the principle of the high load capacity thresholding of setting, and target equilibrium cell can be calculated CC_i(i=2 ..., L+1) allow source equilibrium cell CC₁The downlink balanced load amount (i.e. third load) shifted to it Δ_{2,1_i,dl}Are as follows:

Finally, being based on Δ obtained above_{1,1_i,dl}And Δ_{2,1_i,dl}, source equilibrium cell CC on available down direction₁It can With to target equilibrium cell CC_i(i=2 ..., L+1) balanced load Δ_{Dl, 1_i}Are as follows: Δ_{Dl, 1_i}=min (Δ_{1,1_i,dl}, Δ_{2,1_i,dl})。

Based on any of the above-described embodiment, in the embodiment of the present invention, the candidate user equipment for load balancing is divided into Following multiple set, specific division methods are as follows:

The ability that carrier wave polymerization is first supported according to user equipment, generates following priority set:

If 1) trigger up direction load balancing, the first priority set H1 are as follows: { all support up directions and downlink side It polymerize to the carrier wave of (i.e. two-way), with source equilibrium cell CC₁For PCell, and configured at least one target equilibrium cell CC_i(i =2 ..., L+1) be its two-way SCell but still unactivated user equipment；

Second priority set H2 are as follows: and it is all to support two-way carrier wave polymerization, with source equilibrium cell CC₁For PCell, and Configure at least one target equilibrium cell CC_i(i=2 ..., L+1) is its SCell, but the user for being only configured with down direction sets It is standby }；

Third priority set H3 are as follows: and it is all to support two-way carrier wave polymerization, with source equilibrium cell CC₁For PCell, not yet Any one target equilibrium cell CC of configuration_i(i=2 ..., L+1) is its SCell, and the user of A2 measurement report is not yet reported to set It is standby, wherein when needing to reject the last execution SCell delete operation or the operation of SCell configuration failure away from this load balancing Between interval be less than thresholding T user equipment；

4th priority set H4 are as follows: and it is all to support two-way carrier wave polymerization, with source equilibrium cell CC₁For PCell, not yet Any one target equilibrium cell CC of configuration_i(i=2 ..., L+1) is its SCell, reports the user equipment of A2 measurement report }, Wherein, need to reject the last SCell delete operation or the operation of SCell configuration failure of executing in the set away from this load Time for balance interval is less than the user equipment of thresholding T；

5th priority set H5 are as follows: it is all not support up direction carrier wave to polymerize but support the polymerization of down direction carrier wave, With source equilibrium cell CC₁For PCell, and configured at least one target equilibrium cell CC_i(i=2 ..., L+1) it is its downlink side To SCell but still unactivated user equipment；

6th priority set H6 are as follows: { all not support up direction carrier wave to polymerize but support the polymerization of down direction carrier wave Or do not support carrier wave to polymerize, with source equilibrium cell CC₁For PCell, not yet any one target equilibrium cell CC of configuration_i(i= 2 ..., L+1) it is its SCell, and the user equipment of A2 measurement report is not reported }, wherein it needs to reject nearest one in the set Different-frequency measure reporting was received in section time T, the target equilibrium cell CC obtained from measurement report_i(i=2 ..., L+1) Reference Signal Received Power (Reference Signal Received Power, RSRP) is respectively less than different-frequency measure A4 thresholding User equipment；

7th priority set H7 are as follows: { all not support up direction carrier wave to polymerize but support the polymerization of down direction carrier wave Or do not support carrier wave to polymerize, with source equilibrium cell CC₁For PCell, not yet any one target equilibrium cell CC of configuration_i(i= 2 ..., L+1) it is its SCell, and report the user equipment of A2 measurement report }, wherein need to reject nearest one section in the set Different-frequency measure reporting was received in time T, the target equilibrium cell CC obtained from measurement report_i(i=2 ..., L+1) RSRP is respectively less than the user equipment of different-frequency measure A4 thresholding；

8th priority set H8 are as follows: it is all not support up direction carrier wave to polymerize but support the polymerization of down direction carrier wave, With source equilibrium cell CC₁For PCell, and configured at least one target equilibrium cell CC_i(i=2 ..., L+1) it is its downlink side To SCell and activated user equipment }.

If 2) trigger down direction load balancing, the first priority set H1 are as follows: { all that two-way or down direction is supported to carry Wave polymerization, with source equilibrium cell CC₁For PCell, and configured at least one target equilibrium cell CC_i(i=2 ..., L+1) it is it SCell but still unactivated user equipment }；

Second priority set H2 are as follows: and it is all to support the polymerization of two-way or down direction carrier wave, with source equilibrium cell CC₁For PCell, not yet any one target equilibrium cell CC of configuration_i(i=2 ..., L+1) is its SCell, and not yet A2 is reported to measure The user equipment of report }, wherein it needs to reject the last execution SCell delete operation in the set or SCell configuration is lost Lose the user equipment that operation is less than thresholding T away from this load balancing time interval；

Third priority set H3 are as follows: and it is all to support the polymerization of two-way or down direction carrier wave, with source equilibrium cell CC₁For PCell, not yet any one target equilibrium cell CC of configuration_i(i=2 ..., L+1) is its SCell, and has reported A2 measurement report The user equipment of announcement }, wherein need to reject the last execution SCell delete operation or SCell configuration failure in the set Operate the user equipment for being less than thresholding T away from this load balancing time interval；

4th priority set H4 are as follows: and it is all not support carrier wave to polymerize, with source equilibrium cell CC₁For its serving cell, and The user equipment of A2 measurement report is not reported }, wherein it is rejected in the set in nearest a period of time T and received different-frequency measure report It accuses, the CC obtained from measurement report_iThe RSRP of (i=2 ..., L+1) is respectively less than the user equipment of different-frequency measure A4 thresholding；

5th priority set H5 are as follows: and it is all not support carrier wave to polymerize, with source equilibrium cell CC₁For its serving cell, and Report the user equipment of A2 measurement report }, wherein it is rejected in the set in nearest a period of time T and received different-frequency measure report It accuses, the CC obtained from measurement report_i(i=2 ..., L+1) cell RSRP is respectively less than the user equipment of different-frequency measure A4 thresholding.

Then, each priority set interior element is ranked up according to setting rule, it is such as equal in source according to each user equipment The size of equivalent load on the load balancing direction for the cell that weighs is ranked up, for another example, according to the service quality etc. of user equipment Grade mark (QoS Class Identifier, QCI) is ranked up etc..It is proceeded as follows after sequence:

If 1) trigger up direction load balancing, order of elements in H1, H2 after sequence is successively merged into first set (being denoted as RRCLBCandidateCASCellActiveUserList)；Successively order of elements in H3, H4 after sequence is merged into Second set (is denoted as RRCLBCandidateCASCellConfigUserList)；It is successively that H5, H6, H7, H8 after sequence is suitable Sequence is merged into third set (being denoted as RRCLBCandidateHOUserList)；

2) if down direction load balancing is triggered, using the H1 after sequence as first set (i.e. RRCLBCandidateCA SCellActiveUserList)；H2, H3 sequence after sequence are successively merged into second set (i.e. RRCLBCandidateC ASCellConfigUserList)；H4, H5 sequence after sequence are successively merged into third set (i.e. RRCLBCandidateHOUserList)。

Below based on the first set of above-mentioned division, second set and third set, illustrate the present invention in embodiment The process of the user equipment of offer, specific as follows:

One, the preferential sequential selection user equipment from first set, and determine what the load of each user equipment was transferred to Target equilibrium cell.If it is its SCell, the load of the user equipment that user equipment, which is only configured with a target equilibrium cell, It is transferred to the target equilibrium cell；If the multiple target equilibrium cells of the user configuration are its SCell, the user equipment Load is preferentially transferred on the minimum target equilibrium cell SCell of load.One user equipment of every selection, it is also necessary to record target Balanced cell CC_i(i=2 ..., L+1) received load, and judge whether with this to stop the transfer of load, it is specific to judge Method is as follows:

1) load balancing direction is up direction, is reached if the load that either objective equilibrium cell has received is calculated To the first load of the target equilibrium cell, i.e. Δ_{ul,1_i}, then stop to the target equilibrium cell transfer load.If from first M is chosen in set₁When a user equipment, target equilibrium cell CC is calculated₂,…,CC_L+1It respectively reaches Δ_{ul,1_2}、…、Δ_{ul,1_L+1}, then exit the user and select process, by this M₁A user equipment is equal as final execution uplink load Weigh the user equipment operated, and jumps the step of execution handles selected user equipment, M₁Less than or equal to first The total number for the user equipment for including in set；Otherwise, if choose the last one user equipment in first set, still Discontented foot-eye equilibrium cell CC₂,…,CC_L+1Respectively reach Δ_{ul,1_2}、…、Δ_{ul,1_L+1}, then continue to execute from second set In, select at least one user equipment.

2) if load balancing direction is down direction, reach this if either objective equilibrium cell is calculated and has received load First load of target equilibrium cell, i.e. Δ_{dl,1_i}, then stop to the target equilibrium cell transfer load.If from first set In choose M₁When a user equipment, target equilibrium cell CC₂,…,CC_L+1Δ is respectively reached_{dl,1_2}、…、Δ_{dl,1_L+1}, It then exits user and selects process, by this M₁A user jumps as the final user equipment for executing downlink load equalization operation It executes and above-mentioned selected user equipment is handled；Otherwise, if the last one user chosen in first set sets When standby, it is still unsatisfactory for equalization target cell CC₂,…,CC_L+1Respectively reach Δ_{dl,1_2}、…、Δ_{dl,1_L+1}, then continue to execute from The step of selecting at least one user equipment in two set.

Two, continue from second set, select at least one user equipment, detailed process is as follows:

First calculate source equilibrium cell CC₁Remaining balanced load amount on load balancing direction.Load balancing direction is upper When line direction, source equilibrium cell CC₁Remaining balanced load amount Δ_ulAre as follows:Its Middle Transfered1_ulIf for displaced load of all user equipmenies in the first set in source equilibrium cell it The target equilibrium cell CC being calculated afterwards₂,…,CC_L+1The sum of uplink load amount received；Load balancing direction is downlink When direction, source equilibrium cell CC₁Remaining balanced load amount Δ_dlAre as follows:Wherein, Transfered1_dlIf being calculated to displaced all user equipmenies in first set after the load in source equilibrium cell Obtained target equilibrium cell CC₂,…,CC_L+1The sum of downlink load amount received.

Then, the sequential selection user equipment from second set, and judge whether to stop user's selection, specific deterministic process It is as follows:

1) when load balancing direction is up direction, if choosing M₂When a user equipment, selected user equipment Uplink load amount it is accumulative and first fit is greater than or equal to the remaining balanced load amount of source equilibrium cell in the upstream direction Δ_ul, i.e.,It then exits user and selects process, and by the institute in first set There is M selected in user equipment and second set₂User of a user equipment as final execution uplink load equalization operation, And jump the step of execution handles selected user equipment；Otherwise, the last one use in second set is chosen When the equipment of family, if the uplink load amount of selected user equipment is accumulative and in the upstream direction still less than source equilibrium cell Remaining balanced load amount Δ_ul, then the step of at least one user equipment is selected from third set is continued to execute.

2) when load balancing direction is down direction, if choosing M₂When a user equipment, selected user is set Standby downlink load is accumulative and first fit is greater than or equal to the remaining balanced load amount of source equilibrium cell in the downstream direction Δ_dl, i.e.,It then exits user and selects process, and will be all in first set User equipment and this M₂A user equipment jumps execution to selected as the final user for executing downlink load equalization operation User equipment the step of being handled；Otherwise, when choosing the last one user equipment in second set, if selected The downlink load of user equipment adds up and the remaining balanced load amount Δ still less than source equilibrium cell in the downstream direction_ul, then Continue to execute the step of at least one user equipment is selected from third set.

Three, continuing from third set, before selecting at least one user equipment, first judging whether to need to continue to execute Balanced user's selection, specific as follows:

When load balancing direction is up direction, if by the load of all user equipmenies in first set and second set After transfer, source equilibrium cell CC₁The absolute door of remaining load (i.e. uplink residue load) and setting in the upstream direction The difference of limit is greater than or equal to the offset of setting, then terminates user's selection course；Otherwise, it continues to execute from third set, Select at least one user equipment；Wherein, the cell of source equilibrium at this time CC₁Remaining load in the upstream direction is that the source is equal It is equal in the source that the user equipment selected from the first set is subtracted in the initial load amount of weighing apparatus cell in the upstream direction The load of the up direction for the cell that weighs and the user equipment selected from the second set are in the upper of the source equilibrium cell The load obtained after the load of line direction；

When load balancing direction is down direction, if by the load of all user equipmenies in first set and second set After transfer, source equilibrium cell CC₁The absolute door of remaining load (i.e. downlink residue load) and setting in the downstream direction The difference of limit is greater than or equal to the offset of setting, then terminates user's selection course, wherein source equilibrium cell CC₁In downlink side Selected user equipment is subtracted in the down initial load of source equilibrium cell described in upward remaining load in the source The load obtained after the load of the down direction of balanced cell；Otherwise, it continues to execute from third set, selects at least one A user equipment；Wherein, the cell of source equilibrium at this time CC₁Remaining load in the downstream direction is the source equilibrium cell under It is subtracted in initial load amount on line direction from the user equipment selected in the first set under the source equilibrium cell The load of line direction and the user equipment selected from the second set the source equilibrium cell down direction it is negative The load obtained after lotus amount.

Wherein, continue from third set, selecting at least one user equipment, detailed process is as follows:

Firstly, updating source equilibrium cell CC₁Remaining balanced load amount on load balancing direction.It is specific as follows:

When load balancing direction is up direction, source equilibrium cell CC₁Remaining balanced load amount Δ in the upstream direction_ul Are as follows:Wherein, Transfered1_ulIf to displaced The target equilibrium cell that all user equipmenies in the first set are calculated after the load in source equilibrium cell CC₂,…,CC_L+1The sum of uplink load amount received, Transfered2_ulIf all in the second set to displaced The target equilibrium cell CC that user equipment is calculated after the load in source equilibrium cell₂,…,CC_L+1What is received is upper The sum of row load；

When load balancing direction is down direction, source equilibrium cell CC₁Remaining balanced load amount Δ in the downstream direction_dl Are as follows:Wherein Transfered1_dlIf to displaced first The target equilibrium cell CC that all user equipmenies in set are calculated after the load in source equilibrium cell₂,…, CC_L+1The sum of downlink load amount received, Transfered2_dlIf to displaced all user equipmenies in second set in source The target equilibrium cell CC being calculated after load in balanced cell₂,…,CC_L+1The downlink load amount received it With.

Then, continue the sequential selection user equipment from third set, specific as follows:

For convenience of description, the user equipment in first set is labeled as UE_i_ inScellActivelist, in second set User equipment be labeled as UE_i_ inScellConfiglist, the user equipment in third set are labeled as UE_i_inHOlist。 When load balancing direction is up direction, sequential selection user equipment is up to source equilibrium cell is in up direction from third set On remaining load to be less than or equal to the residue of the absolute thresholding or source equilibrium cell of setting in the upstream direction balanced negative When lotus amount is 0 or chooses the last one user equipment in third set, stops user and select process, that is, choose M₃ When a user equipment, meet OrOr M₃It has been third set In the last one user equipment when, then exit user select process.

When load balancing direction is down direction, user equipment is sequentially selected from third set up to source equilibrium cell exists Remaining load on down direction is less than or equal to absolute thresholding or source equilibrium cell in the downstream direction surplus of setting When remaining balanced load amount is 0 or chooses the last one user equipment in third set, stops user and select process.I.e. Choose M₃Meet when a user equipment OrOr M₃It has been in third set The last one user equipment, then exit user select process.

Based on any of the above-described embodiment, in the embodiment of the present invention, to from being carried out from the user equipment selected in first set When reason:

If load balancing direction is up direction, at least one configured for what is selected from first set target is equal The cell that weighs is the up direction of the user equipment and the SCell of down direction but not yet activates the user equipment of SCell, activation The SCell of selected user equipment；Or at least one configured target is equal for what is selected from the first set The cell that weighs is the user equipment of the SCell of the down direction of the user equipment, passes through wireless heterogeneous networks (Radio Resource Control, RRC) it reconfigures up direction and down direction is carried out (i.e. to the SCell of selected user equipment It is two-way) reconfigure, and activate reconfigure after user equipment SCell；

If load balancing direction is that down direction activates selected use to the user equipment selected from first set The SCell of family equipment.

Based on any of the above-described embodiment, in the embodiment of the present invention, to from being carried out from the user equipment selected in second set When reason:

Based on any of the above-described embodiment, in the embodiment of the present invention, to from being carried out from the user equipment selected in third set When reason:

At least one configured for what is selected from third set target equilibrium cell is the user equipment in institute The user equipment for stating the SCell on the opposite direction in load balancing direction determines the configured mesh of selected user equipment It marks the load that balanced cell has received on the opposite direction in the load balancing direction and is less than the target equilibrium cell in institute Stating allows received 4th load on the opposite direction in load balancing direction, carry out at alien frequencies switching to selected user equipment Reason, selected user equipment is switched on its SCell；

Either objective equilibrium cell is not configured as the use of the SCell of the user equipment for what is selected from third set Family equipment judges selected user according to the measurement report received for selected user device configuration different-frequency measure Equipment meets alien frequencies switching condition, and either objective equilibrium cell has received on the opposite direction in the load balancing direction Load is less than the either objective equilibrium cell allows received 4th load on the opposite direction in the load balancing direction Amount, is switched to the either objective equilibrium cell for selected user equipment.

Specifically, the uplink and downlink business of user can be transferred to equalization target cell when in view of alien frequencies switching, therefore, on The load balancing of down direction cannot be triggered when line direction load balancing, and cannot trigger uplink side when down direction load balancing To load balancing.

When load balancing direction is up direction, initialized target equilibrium cell CC_iUnder (i=2 ..., L+1) is received Row load Δ_{transfered_dl,1_i}It is 0.

1) for configured target equilibrium cell CC_i(i=2 ..., L+1) is the user equipment of its down direction SCell, If meeting Δ_{transfered_dl,1_i}< Δ_{dl,1_i}, then it is configured target equilibrium cell CC_i(i=2 ..., L+1) it is its downlink side Alien frequencies hand-off process is carried out to the user equipment of SCell.Assuming that the downlink load of the user equipment is P_{DL_user}, more fresh target is equal Weigh cell CC_i(i=2 ..., L+1) received downlink load amount Δ_{transfered_dl,1_i}=Δ_{transfered_dl,1_i}+P_{DL_user}； Otherwise, to the user equipment without processing.

2) for target equilibrium cell CC is not configured_i(i=2 ..., L+1) is the user equipment of its SCell, to the user Equipment carries out different-frequency measure configuration.If receiving the measurement report of user equipment and meeting alien frequencies switching condition, further judgement is It is no to meet Δ_{transfered_dl,1_i}< Δ_{dl,1_i}If meeting alien frequencies switching condition, it is small which is switched to target equilibrium Area CC_i, it is assumed that the downlink load of the user equipment is P_{DL_user}, more fresh target equilibrium cell CC_i(i=2 ..., L+1) it has received Downlink load amount Δ_{transfered_dl,1_i}=Δ_{transfered_dl,1_i}+P_{DL_user}；Otherwise, then to the user equipment without place Reason.

When load balancing direction is down direction, initialized target equilibrium cell CC_iOn (i=2 ..., L+1) is received Row load Δ_{transfered_ul,1_i}It is 0.For target equilibrium cell CC is not configured_i(i=2 ..., L+1) is the use of its SCell Family equipment carries out different-frequency measure configuration to the user.If receiving the measurement report of the user equipment and meeting alien frequencies switching condition, It then further determines whether to meet Δ_{transfered_ul,1_i}< Δ_{ul,1_i}, if satisfied, the user equipment is then switched to target equilibrium Cell CC_i, it is assumed that the uplink load of the user equipment is P_{UL_user}, more fresh target equilibrium cell CC_i(i=2 ..., L+1) it has connect The uplink load amount Δ of receipts_{transfered_ul,1_i}=Δ_{transfered_ul,1_i}+P_{UL_user}；Otherwise, then to the user equipment without place Reason.

Based on the above embodiment, method provided in an embodiment of the present invention further include: determine each target equilibrium cell in institute Stating allows received 4th load on the opposite direction in load balancing direction.

The step can determine that equilibrium cell in source needs to turn to each target equilibrium cell on load balancing direction in S12 It is executed when the first load moved.

Since the embodiment of the present invention is when calculating the load for needing to shift, not only allow on triggering load balancing direction Load condition, it is also contemplated that the load of transfer cannot cause the load balancing for triggering the opposite direction in load balancing direction, keep away The load for having exempted from transfer is excessive, so that the transfer of a direction load leads to the case where triggering the load balancing of opposite direction.

In an implementation, as a kind of possible implementation, determine each target equilibrium cell in the load balancing side To opposite direction on allow received 4th load, comprising:

It does not limited in the embodiment of the present invention and determines the 5th load, determined the 6th load and determine the 7th load Sequencing.

For example, the 5th load determined is Δ when load balancing direction is up direction_{1,1_i,dl}=(P_ th_high-P_{DL_CCi}), the 6th load determined is Δ_{2,1_i,dl}=(P_th_absolute-P_{DL_CCi}), the 7th load determined Amount is

When load balancing direction is down direction, the 5th load determined is Δ_{1,1_i,ul}=(P_th_high- P_{UL_CCi}), the 6th load determined is Δ_{2,1_i,ul}=(P_th_absolute-P_{UL_CCi}), the 7th load determined is

In an implementation, as a kind of possible implementation, according to the 5th load, the 6th load and institute The 7th load is stated, according to following formula, determines the target equilibrium cell on the opposite direction in the load balancing direction Allow received 4th load:

Specifically, the 4th load determined is when load balancing direction is up direction

When load balancing direction is down direction, the 4th load determined is

In the embodiment of the present invention, in some parts with covering scene such as concentric circles great circle to when cell equilibrium, great circle Coverage area is greater than ringlet coverage area, and the user equipment selected may be not at ringlet coverage area, this portion picked out Divide user equipment not to be able to satisfy SCell configuration condition or switching condition, will be unable to allocation activation SCell or execute switching, thus It can not achieve load and be transferred to ringlet from great circle.So in the case where part is with covering scene, it, can be right for the effect of load balancing The user equipment of selection carries out a certain amount of amplification, and the user equipment of some redundancies is selected to execute load balancing operation.It selected Journey is as follows:

Remember N_SCellActive(i.e. M₁)、N_SCellConfig(i.e. M₂)、N_HO(i.e. M₃) it is from first set, second set, third collection The number of the user equipment selected respectively in conjunction, N_{SCellconfiglist_final}(i.e. M_{2_final})、N_{HOlist_final}(i.e. M_{3_final}) it is the The total number of two set, user equipment in third set.Assuming that the number of the user equipment of final choice is N_{total_select} (i.e. M), then:

If N_SCellConfig=0 and N_HO=0, then N_{total_select}=N_SCellActive；

If N_SCellConfig> 0 and N_HO=0, then N_{total_select}=N_SCellActive+MIN(N_SCellConfig×α, N_{SCellconfiglist_final})；

If N_SCellConfig> 0 and N_HO> 0, then N_{total_select}=N_SCellActive+N_SCellConfig+MIN(N_SCellConfig× (α-1)+N_HO×α,N_{HOlist_final})；

Wherein, α is the amplification factor of setting, α >=1.

It should be noted that final choice switches over the number of the user equipment of processing after the number amplification of user equipment Mesh should be less than or the number of the user equipment equal to initial selected switching.

By above-mentioned load balancing process, if equilibrium cell load in source is still very high, and without normal direction alien frequencies member Carrier cell carries out load balancing, then it is small to the non-member carrier wave of other co-sited or non-co-sited can to continue trigger source equilibrium cell The load balancing in area.Because source equilibrium cell and these non-member carrier cells only have overlapping coverage areas at edge.

Description based on the above-mentioned technical proposal in the embodiment of the present invention two, provides in another carrier aggregation system Load equalization method, as shown in Fig. 2, specific as follows:

When S21, load balancing period reach, load estimation is carried out to each cell of our station；

S22, determined according to information on load this load balancing period need to carry out load balancing cell and load it is equal Weighing apparatus direction.If there is the source equilibrium cell for needing to carry out load balancing, then S23 is executed；

S23, preferentially select member carrier cell as candidate equalization target cell, and according to source equilibrium cell load, time The information such as equalization target cell load, load balancing direction are selected to determine target equilibrium cell；

S24, according to source equilibrium cell load, candidate equalization target cell load, calculate this load balancing period needs Execute balanced load (i.e. the first load)；

S25, the ability and the configured SCell state of user polymerizeing in conjunction with User support carrier wave, generate priority set；

The selection and processing of S26, balanced user, specifically:

It preferentially selects configured SCell but still unactivated user is as balanced user, carrier wave polymerization is supported in selection later But the user of SCell is not yet configured as balanced user, finally selects the user for not supporting carrier wave to polymerize as balanced user.

The user equipment of priority set is successively selected to execute load balancing processing according to the equilibrium quantity of calculating, specifically: By configured SCell but still unactivated user equipment executes SCell activation, will support carrier wave polymerization but not yet configures SCell User equipment execute the activation of SCell measuring configuration, the user equipment that carrier wave will not supported to polymerize executes different-frequency measure and alien frequencies Switching.

Below by two specific embodiments, method provided in an embodiment of the present invention is described in detail.

Embodiment three, the present embodiment are applied to complete same covering scene, as shown in figure 3, the two of two frequency ranges of F1, F2 composition The network of a carrier wave polymerization.F1, F2 bandwidth are identical.Assuming that Cell1 (F1) uplink load is 30%, downlink load 70%； Cell2 (F2) uplink load is 20%, downlink load 20%；Assuming that Cell1 (F1), Cell2 (F2) cell spectrum efficiency phase Deng.There was only 40% user in network is the terminal for supporting carrier wave polymerization, remaining is the user equipment for not supporting carrier wave to polymerize. Assuming that load balancing triggering needs the load absolute door met to be limited to 50%；Load balancing triggering needs the load met with respect to door It is limited to 20%；The high load capacity thresholding that load balancing triggering needs to meet is 80%；Illustrate under this scene by taking Cell1 (F1) as an example Load balancing process.Load balancing can be realized with step as follows:

1, when reaching in the load balancing period, equilibrium cell in source is determined according to cell load.

Specifically, the highest cell uplink load of load is 30% on up direction, absolute door is triggered lower than load balancing Limit, therefore, up direction do not need triggering load balancing；The highest cell downlink load of down direction load reaches 70%, greatly Absolute thresholding 50% is triggered in load balancing, therefore, downlink needs to trigger load balancing, and equilibrium cell in source is Cell1 (F1), bears Lotus equilibrium direction is downlink.

2, target equilibrium cell is determined.Preferentially select alien frequencies member carrier cell Cell2 (F2) as candidate balanced mesh Mark cell.

Specifically, obtaining the load of Cell2 (F2), and carry out the triggering judgement of load balancing.

Down direction: Cell1 (F1) downlink load 70%, Cell1 (F1) and Cell2 (F2) downlink load difference are 50%, meet the condition for being greater than load balancing triggering relative threshold 20%, and Cell2 (F2) downlink load 20%, satisfaction is less than Load balancing triggers the condition of high load capacity thresholding 80%, so down direction meets load balancing trigger condition.

3, the down direction balanced load amount of Cell1 (F1) to Cell2 (F2) is calculated.Permit specifically, calculating up direction Perhaps balanced load amount and down direction need balanced load amount.Wherein:

1) uplink allows balanced load amount to calculate as follows:

Consider the load bearing capacity of Cell2 (F2), Cell2 (F2) uplink load is touched no more than load balancing after equilibrium High load capacity thresholding is sent out, Cell2 (F2) uplink can be calculated accordingly allows balanced load amount Δ_{1,1_2,ul}It is 60%；

Consider that Cell2 (F2) uplink load will not then trigger up direction no more than load balancing triggering absolute door in limited time Cell2 (F2) arrives the load balancing of Cell1 (F1), and Cell1 (F1) uplink can be calculated accordingly allows balanced load amount Δ_{2,1_2,ul}It is 20%.

When considering Cell2 (F2) and Cell1 (F1) uplink load difference no more than load balancing triggering relative threshold then not Up direction CC can be triggered₂To CC₁Load balancing, CC can be calculated accordingly₂Uplink allows balanced load amount Δ_{3,1_2,ul} It is 15%；

In summary Cell2 (F2) allows Cell1 (F1) to its balanced load on the available up direction of result Δ_{Ul, 1_2}It is 20%.

2) downlink needs balanced load amount to calculate as follows:

Downlink equilibrium can be calculated based on the equal principle of Cell2 after equilibrium (F2) and Cell1 (F1) downlink load Load Δ_{1,1_2,dl}It is 25%；

Consider the load bearing capacity of Cell2 (F2), Cell2 (F2) downlink load is touched no more than load balancing after equilibrium The equilibrium that Cell2 on down direction (F2) allows Cell1 (F1) to shift to it can be calculated in the principle of hair high load capacity thresholding Load Δ_{2,1_2,dl}It is 60%；

In summary Cell1 (F1) needs the load to Cell2 (F2) equilibrium on the available down direction of result Δ_{Dl, 1_2}It is 25%.

4, the ability of carrier wave polymerization and user device configuration SCell state is supported to carry out set division in conjunction with user equipment. It is specific as follows:

First priority set H1:{ all support CA, Cell1 (F1) are PCell, and Cell2 (F2) is SCell, configured Down direction SCell but unactivated user }；

Second priority set H2:{ all support CA, Cell1 (F1) are PCell, and Cell2 (F2) is SCell, configured Two-way SCell but unactivated user }；

Third priority set H3:{ all support CA, Cell1 (F1) are PCell, and SCell is not configured, and A2 is not reported to survey Measure the user of report }；

4th priority set H4:{ all support CA, Cell1 (F1) are PCell, and SCell is not configured, and A2 is reported to measure The user of report }；

5th priority set H5:{ does not support that CA, Cell1 (F1) are its serving cell, does not report the use of A2 measurement report Family }；

6th priority set H6:{ does not support that CA, Cell1 (F1) are its serving cell, reports the use of A2 measurement report Family }；

Each priority set interior element is ranked up according to setting rule, it later will be in priority set H1, H2 set Element is merged into RRCLBCandidateSCellActiveUserList according to H1, H2 sequence；By priority set H3, H4 collection Element is merged into RRCLBCandidateSCellConfigUserList according to H3, H4 sequence in conjunction；To sort, treated Element is merged into RRCLBCandidateHOUserList according to H5, H6 sequence in H5, H6 set.

5, the selection of balanced user is preferentially carried out from RRCLBCandidateSCellActiveUserList.Specifically such as Under:

Sequence selects user equipment, and records target equilibrium cell Cell2 (F2) received load, if selected to the M₁When a user equipment, target equilibrium cell Cell2 (F2) received load reaches Δ_{dl,1_2}, then exit user and select stream Journey, by this M₁A user is as the final user for executing downlink load equalization operation.Otherwise, if selecting a last user When equipment, target equilibrium cell Cell2 (F2) received load is still less than Δ_{dl,1_2}, then step 6 is continued with.

6, continue the selection that balanced user is carried out from RRCLBCandidateSCellConfigUserList.Specifically such as Under:

Firstly, calculating the remaining balanced load amount of source equilibrium cell Cell1 (F1) on load balancing direction.Down direction When load balancing, source equilibrium cell CC₁Remaining balanced load amount Δ in the downstream direction_dlAre as follows: Δ_dl=Δ_{dl,1_i}- Transfered1_dl, wherein Transfered1_dlFor target equilibrium cell Cell2 (F2) in above-mentioned steps 5 it is received under Row load.

Then, user equipment is sequentially selected, and judges whether that stopping user selecting.It is specific as follows:

When down direction load balancing, if selected to M₂When a user equipment, the downlink load of user equipment is accumulative It is greater than or equal to the remaining balanced load amount Δ of source equilibrium cell Cell1 (F1) in the downstream direction with first fit_dl, i.e.,It then exits user and selects process, it is contemplated that Cell1 (F1) and Cell2 under this scene (F2) basic with covering, SCell configuration successful probability is higher, it is possible to user's amplification factor are set as 1, do not continue to select Balanced user.The user equipment and this M that will be selected in step 5)₂A user equipment executes downlink load equalization operation as final User equipment；Otherwise, when selecting a last user equipment, the downlink load of user equipment is accumulative and equal still less than source Weigh the remaining balanced load amount Δ of cell Cell1 (F1) in the downstream direction_dl, then continue to execute 7).

7, continue the selection that balanced user is carried out from RRCLBCandidateHOUserList.

First, it is determined that whether needing to continue to execute balanced user's selection.It is specific as follows:

When down direction load balancing, if met by 5) 6) step load transfer opisthogenesis equilibrium cell Cell1 (F1) Downlink residue load lower than the offset for setting absolute thresholding or less and setting, then terminate user's selection course.And by step 5) 6) user equipment selected in is as the final user equipment for executing downlink load equalization operation；Otherwise, source equilibrium cell is updated CC₁Remaining balanced load amount in the downstream direction.Update method is as follows:

When down direction load balancing, source equilibrium cell CC₁Remaining balanced load amount Δ in the downstream direction_dlAre as follows: Δ_dl =Δ_{dl,1_i}-Transfered1_dl-Transfered2_dl；Wherein Transfered1_dlFor all target equilibrium cell Cell2 (F2) in the received downlink load amount of above-mentioned 5) step.Transfered2_dlIt is target equilibrium cell Cell2 (F2) 6) step The downlink load of the user equipment selected in rapid and.

Then, continue the sequential selection user from RRCLBCandidateHOUserList.It is specific as follows:

When down direction load balancing, user equipment is sequentially selected until the residual negative of source equilibrium cell in the downstream direction Lotus amount drop to 10% or less or source equilibrium cell remaining balanced load amount in the downstream direction be 0 or select last one When user equipment, stops user and select process.It is covered in view of Cell1 (F1) under this scene and Cell2 (F2) is substantially same, SCell configuration and handover success probability are higher, it is possible to user equipment amplification factor (i.e. α) are set as 1, do not continue to select Balanced user equipment.

8, be above-mentioned steps 5) in select balanced user according to User support carrier aggregation capacity and SCell configuration status It is handled.It is specific as follows:

When down direction load balancing, the two-way carrier wave polymerization of the support selected in step 5) or down direction carrier wave are polymerize And configured target equilibrium cell is its SCell but still unactivated user carries out SCell activation operation.

9, the balanced user for step 6) selection is handled.It is specific as follows:

When down direction load balancing, the user configuration SCell that SCell is not configured is measured.Receive after measurement report from Meet the target equilibrium cell for selecting load minimum in the target equilibrium cell of SCell configuration condition and signaling is reconfigured by RRC Carry out the configuration of down direction SCell.Its SCell is activated again later.

10, the balanced user for step 7) selection is handled.It is specific as follows:

It is small to be transferred to equalization target for the uplink and downlink business of user equipment when in the present embodiment in view of alien frequencies switching The considerations of area, the load balancing of up direction cannot be triggered by increasing the load balancing of down direction.It is specific as follows:

When down direction load balancing, the received uplink load amount of initialized target equilibrium cell Cell2 (F2) Δ_{transfered_ul,1_2}It is 0, the number of the user equipment switched is 0.It is for target equilibrium cell Cell2 (F2) is not configured The user equipment of its SCell, it is contemplated that Cell1 (F1) and Cell2 (F2) is substantially the same as covering, institute in the application scenarios of the present embodiment Can not be the corresponding alien frequencies handover measurement configuration of balanced user device configuration, but directly initiate to cut for simple flow Change request.

Sequential selection user equipment, if the number for the user equipment that judgement has switched is less than the switching before not amplifying The number of user equipment and meet Δ_{transfered_ul,1_2}< Δ_{ul,1_2}, then the switching to target equilibrium cell Cell2 (F2) is initiated Process.If the uplink load of the user equipment is P_{UL_user}, more fresh target equilibrium cell Cell2 (F2) received uplink load Measure Δ_{transfered_ul,1_2}=Δ_{transfered_ul,1_2}+P_{UL_user}, update the number of the user equipment switched；Otherwise, then to this User equipment is without processing.

Example IV: the present embodiment is applied to concentric circles size circuit covering scene, two carrier waves of two frequency ranges of F1, F2 composition Converging network, as shown in Figure 4.F1, F2 bandwidth are identical.If Cell1 (F1) uplink load is 80%, downlink load 70%； Cell2 (F2) uplink load is 20%, downlink load 20%；If Cell1 (F1), Cell2 (F2) cell spectrum efficiency are equal. User is the terminal for supporting carrier wave polymerization in network.Assuming that load balancing triggering needs the load absolute door met to be limited to 50%；The load relative threshold that load balancing triggering needs to meet is 20%；The high load capacity door that load balancing triggering needs to meet It is limited to 80%；Illustrate the load balancing process under this scene by taking Cell1 (F1) as an example.Load balancing can as follows and Step is realized:

1, equilibrium cell in source is determined according to cell load when reaching in the load balancing period.It is specific as follows:

The highest cell uplink load of load is 80% on up direction, is higher than load balancing and triggers absolute thresholding 50%, Up direction needs to trigger load balancing；The highest cell downlink load of down direction load reaches 70%, is greater than load balancing Absolute thresholding 50% is triggered, so needing to trigger load balancing.

Up direction load is higher than down direction load, it is determined that load balancing direction is uplink.

2, target equilibrium cell is determined.Preferentially select alien frequencies member carrier cell Cell2 (F2) as candidate balanced mesh Mark cell.The load of Cell2 (F2) is obtained, and carries out the triggering judgement of load balancing.It is specific as follows:

Up direction: Cell1 (F1) uplink load 80%, Cell1 (F1) and Cell2 (F2) uplink load difference are 60%, meet the condition for being greater than load balancing triggering relative threshold 20%, and Cell2 (F2) uplink load 20%, satisfaction is less than Load balancing triggers the condition of high load capacity thresholding 80%, so up direction meets load balancing trigger condition.

3, the up direction transfer load amount of Cell1 (F1) to Cell2 (F2) is calculated.Uplink side is calculated separately in this step To needing balanced load amount and down direction to allow balanced load amount.It is specific as follows:

1) uplink needs balanced load amount to calculate as follows:

Uplink equilibrium can be calculated based on the equal principle of Cell2 after equilibrium (F2) and Cell1 (F1) uplink load Load Δ_{1,1_2,ul}It is 25%；Consider the load bearing capacity of Cell2 (F2), Cell2 (F2) uplink load cannot surpass after equilibrium Overload equilibrium triggering high load capacity thresholding principle can be calculated Cell2 on up direction (F2) allow Cell1 (F1) to Its balanced load amount Δ shifted_{2,1_2,ul}It is 60%；In summary on the available up direction of result Cell1 (F1) need to The load Δ of Cell2 (F2) equilibrium_{Ul, 1_2}It is 25%.

2) downlink allows balanced load amount to calculate as follows:

Consider the load bearing capacity of Cell2 (F2), Cell2 (F2) downlink load is touched no more than load balancing after equilibrium High load capacity thresholding is sent out, Cell2 (F2) downlink can be calculated accordingly allows balanced load amount Δ_{1,1_2,dl}It is 60%；Consider Cell2 (F2) downlink load will not then trigger down direction Cell2 (F2) in limited time no more than load balancing triggering absolute door and arrive The load balancing of Cell1 (F1), Cell1 (F1) downlink can be calculated accordingly allows balanced load amount Δ_{2,1_2,dl}It is 30%； It will not then be triggered down when considering Cell2 (F2) and Cell1 (F1) downlink load difference no more than load balancing triggering relative threshold Line direction CC₂To CC₁Load balancing, CC can be calculated accordingly₂Downlink allows balanced load amount Δ_{3,1_2,dl}It is 35%；It is comprehensive Closing Cell2 (F2) on the available down direction of the above results allows Cell1 (F1) to its balanced load Δ_{Dl, 1_2}For 35%.

4, set division is carried out in conjunction with the ability and user configuration SCell state of the polymerization of User support carrier wave.

Priority set is generated according to following priority orders and principle.In view of being in small under the present embodiment application scenarios The user channel quality of district center is preferable, signalling high reliablity, and the load balancings such as SCell configuration and switching operate success rate It is higher, it is possible to preferentially to be selected.And in view of Cell1 (F1) and Cell2 (F2) are partially deposited with covering SCell configuration Possibility in failure or the mobile SCell because of user equipment may be deleted.So needing to pick in priority set Except these user equipmenies.

First priority set H1:{ is all to support two-way carrier wave polymerization, and Cell1 (F1) is PCell, and Cell2 (F2) is SCell, configured two-way SCell but unactivated user equipment }；

Second priority set H2:{ is all to support two-way carrier wave polymerization, and Cell1 (F1) is PCell, and Cell2 (F2) is SCell, the user equipment of configured down direction SCell }；

Third priority set H3:{ is all to support two-way carrier wave polymerization, and Cell1 (F1) is PCell, and SCell is not configured, Do not report the user equipment of A2 measurement report }, wherein need to reject in H3 it is the last execute SCell delete operation or The operation of SCell configuration failure is less than thresholding GT away from this load balancing time interval_{scell_config}User equipment；

4th priority set H4:{ is all to support two-way carrier wave polymerization, and Cell1 (F1) is PCell, and SCell is not configured, Report the user equipment of A2 measurement report }, wherein need to reject the last execution SCell delete operation or SCell in H4 Configuration failure operation is less than thresholding GT away from this load balancing time interval_{scell_config}User equipment；

5th priority set H5:{ is all not to be supported up direction carrier wave to polymerize but supports the polymerization of down direction carrier wave, Cell1 (F1) is its serving cell, and SCell is not configured, does not report the user equipment of A2 measurement report }；

6th priority set H6:{ is all not to be supported up direction carrier wave to polymerize but supports the polymerization of down direction carrier wave, Cell1 (F1) is its serving cell, configures SCell, does not report the user equipment of A2 measurement report }；

Each priority set interior element is ranked up according to setting rule, it later will be in priority set H1, H2 set Element is merged into user's set RRCLBCandidateSCellActiveUserList according to H1, H2 sequence；By priority set Element is merged into user's set RRCLBCandidateSCellConfigUserList according to H3, H4 sequence in H3, H4 set； According to H5, H6 sequence user's set will be merged by element in sequence treated H5, H6 set RRCLBCandidateHOUserList。

5, the selection of balanced user is preferentially carried out from RRCLBCandidateSCellActiveUserList.

Specifically, sequence selects user, and target equilibrium cell Cell2 (F2) received load is recorded, if selected To M₁When a user equipment, target equilibrium cell Cell2 (F2) received load reaches Δ_{ul,1_2}, then user's selection is exited Process, by this M₁A user equipment is as the final user for executing uplink load equalization operation.Otherwise, if selecting last one When a user equipment, target equilibrium cell Cell2 (F2) received load is still less than Δ_{ul,1_2}, then step 6) is continued to execute.

6, continue the selection that balanced user is carried out from RRCLBCandidateSCellConfigUserList.

Firstly, calculating the remaining balanced load amount of source equilibrium cell Cell1 (F1) on load balancing direction.Up direction When load balancing, source equilibrium cell CC₁Remaining balanced load amount Δ in the upstream direction_ulAre as follows: Δ_ul=Δ_{ul,1_i}- Transfered1_ul, wherein Transfered1_ulBe target equilibrium cell Cell2 (F2) in above-mentioned steps 5) in it is received on Row load.

Then, user is sequentially selected, and judges whether that stopping user selecting.When up direction load balancing, if selected To M₂When a user equipment, the uplink load for the user equipment selected is accumulative and first fit is greater than or equal to Cell1 (F1) remaining balanced load amount Δ in the upstream direction_ul, i.e.,Then exit user's selection Process.

In view of Cell1 (F1) under this scene and Cell2 (F2) is part with covering, Cell2 (F2) coverage area is small In Cell1 (F1), the failure that SCell configuration has certain probability is higher, it is possible to be set as the amplification factor of user equipment Value greater than 1, such as 1.2.0.2*M is sequentially selected in continuation in RRCLBCandidateSCellConfigUserList₂A use Family equipment is as target equilibrium user, the user equipment and this 1.2*M that will be selected in step 5)₂A user equipment is used as and finally holds The user equipment of row downlink load equalization operation.

If select a last user equipment, the uplink load of the user equipment selected it is accumulative and still less than The remaining balanced load amount Δ of Cell1 (F1) in the upstream direction_ul, then continue to execute 7).

First, it is determined that whether needing to continue to execute balanced user's selection.When up direction load balancing, pass through if met 5) 6) the uplink residue load of step load transfer opisthogenesis equilibrium cell Cell1 (F1) be lower than what setting absolute thresholding or less set Offset then terminates user's selection course.And the middle user equipment that selects as final execution uplink load equal using step 5) 6) Weigh the user equipment operated；Otherwise, update source equilibrium cell CC is continued to execute₁Remaining balanced load amount in the upstream direction. Update method is as follows:

When up direction load balancing, source equilibrium cell CC₁Remaining balanced load amount Δ in the upstream direction_ulAre as follows: Δ_ul =Δ_{ul,1_i}-Transfered1_ul-Transfered2_ul, wherein Transfered1_ulFor all target equilibrium cell Cell2 (F2) in the received uplink load amount of above-mentioned 5) step.Transfered2_ulIt is target equilibrium cell Cell2 (F2) 6) step The sum of the uplink load amount of user equipment selected in rapid.

Then, continue sequential selection user equipment.Up direction load balancing: it sequentially selects to M₃When a user equipment The remaining load of source equilibrium cell in the upstream direction drops to 10% or less or source equilibrium cell residue in the upstream direction Balanced load amount is 0 or M₃When for the last one user equipment, stops user and select process.In view of Cell1 under this scene (F1) and Cell2 (F2) is part with covering, and Cell2 (F2) coverage area is less than Cell1 (F1), and SCell configuration has one The failure for determining probability is higher, it is possible to which the amplification factor of user equipment is set as the value greater than 1, such as 1.2.Continue 0.2* (M is sequentially selected in RRCLBCandidateHOUserList₂+M₃) a user equipment is as target equilibrium user.By step 5) 6) in select user equipment and this 0.2*M₂+1.2*M₃A user equipment is as final execution uplink load equalization operation User equipment.

It 8, is the user equipment that selects in above-mentioned 5) step according to User support carrier aggregation capacity and SCell configuration status It is handled.Specifically:

When up direction load balancing, the two-way carrier wave of support selected in step 5) is polymerize and configured target equilibrium is small Area is its two-way SCell but still unactivated user equipment carries out SCell activation operation；The support selected in step 5) is two-way Carrier wave polymerization but only configuration target equilibrium cell reconfigure signaling by RRC for the user equipment of its down direction SCell and carry out Reconfiguring for two-way SCell later again activates its SCell.

9, the user equipment for step 6) selection is handled.Specifically:

When up direction load balancing, the user device configuration SCell that SCell is not configured is measured.Receive measurement report The target equilibrium cell for selecting load minimum from the target equilibrium cell for meet SCell configuration condition afterwards is reconfigured by RRC Signaling carries out the configuration of two-way SCell, later again activates its SCell.

10, the balanced user for step 7) selection is handled.Specifically:

The uplink and downlink business of user can be transferred to equalization target cell when in the present embodiment in view of alien frequencies switching, increase The considerations of load balancing of down direction cannot be triggered by having added the load balancing of up direction.

When up direction load balancing, the received downlink load amount of initialized target equilibrium cell Cell2 (F2) Δ_{transfered_dl,1_2}It is 0, having switched number of users is 0.For the use that target equilibrium cell Cell2 (F2) is its SCell is not configured Family equipment, it is contemplated that in this scene Cell1 (F1) and Cell2 (F2) partially with covering, need for the user device configuration it is corresponding Alien frequencies handover measurement configuration.After receiving measurement report, sequential processes user equipment, if the user equipment that judgement has switched Number is less than the number of the user equipment of the switching before not amplifying and meets Δ_{transfered_dl,1_2}< Δ_{dl,1_2}, then initiate to The handoff procedure of target equilibrium cell Cell2 (F2).If the downlink load of the user equipment is P_{DL_user}, more fresh target equilibrium is small The received downlink load amount Δ of area Cell2 (F2)_{transfered_dl,1_2}=Δ_{transfered_dl,1_2}+P_{DL_user}, what update had switched The number of user equipment；Otherwise, then to the user equipment without processing.

Above method process flow can realize that the software program can store in storage medium with software program, when When the software program of storage is called, above method step is executed.

Based on the same inventive concept, the load balancing dress in a kind of carrier aggregation system is additionally provided in the embodiment of the present invention It sets, the principle solved the problems, such as due to the device is similar to the load equalization method in a kind of above-mentioned carrier aggregation system, should The implementation of device may refer to the implementation of method, and overlaps will not be repeated.

In the embodiment of the present invention five, the load balancing device in a kind of carrier aggregation system is provided, as shown in figure 5, should Device includes:

First processing module 51, for determining that the source for needing to carry out load balancing is equal within each load balancing period The load balancing direction for cell and the source equilibrium cell of weighing, and from the corresponding member carrier cell of the source equilibrium cell In, determine at least one target equilibrium cell that the load balancing of the source equilibrium cell is arrived；

Second processing module 52, for determining that the source equilibrium cell needs on the load balancing direction to each mesh Mark the first load of balanced cell transfer；

Third processing module 53, for being born from support is described according to corresponding first load of each target equilibrium cell Lotus equilibrium direction carrier wave polymerize and with the source equilibrium cell to select at least one user equipment in the user equipment of PCell, And load of the selected user equipment in the source equilibrium cell is transferred to the SCell of selected user equipment On, so that the accumulative load received of each target equilibrium cell reaches corresponding first load of target equilibrium cell, Wherein, the SCell for selected user device configuration and activation is at least one of the target equilibrium cell determined.

In possible implementation, first processing module is specifically used for:

Or

In possible implementation, first processing module is specifically used for:

In possible implementation, Second processing module is specifically used for:

In possible implementation, third processing module is specifically used for:

In possible implementation, third processing module is also used to:

If the load balancing direction is up direction, configured for what is selected from the first set at least one A target equilibrium cell is the up direction of the user equipment and the SCell of down direction but not yet activates the user of SCell Equipment activates the SCell of selected user equipment；Or configured at least one for what is selected from the first set A target equilibrium cell is the user equipment of the SCell of the down direction of the user equipment, is reconfigured by RRC to selected User equipment SCell carry out it is two-way reconfigure, and activate reconfigure after user equipment SCell；

In possible implementation, third processing module is also used to:

If the load balancing direction is up direction, not yet A2 is reported to measure for what is selected from the second set The user equipment of report configures selected user equipment and carries out SCell measurement, according to the survey of selected user equipment to report Amount report, the target equilibrium cell for selecting current load amount minimum from the target equilibrium cell for meet SCell configuration condition are made It is two-way to the SCell progress of selected user equipment to reconfigure for the SCell of selected user equipment, and activate reconfiguration The SCell of the user equipment postponed；For the user equipment for having reported A2 measurement report selected from the second set, root According to the measurement report of selected user equipment to report, selected from the target equilibrium cell for meet SCell configuration condition current SCell of the minimum target equilibrium cell of load as selected user equipment, to the SCell of selected user equipment Carry out it is two-way reconfigure, and activate reconfigure after user equipment SCell；

In possible implementation, third processing module is also used to:

If displaced all user equipmenies in the second set after the load in the source equilibrium cell, institute The difference for stating the absolute thresholding of remaining load and setting of the equilibrium cell in source on the load balancing direction is less than setting Offset selects at least one user equipment from third set, until the source equilibrium cell is in the load balancing direction On remaining load be less than or equal to setting absolute thresholding or the source equilibrium cell on the load balancing direction Remaining balanced load amount be 0 or selected all user equipmenies in the third set, wherein the source equilibrium is small Remaining load of the area on the load balancing direction is initial load of the source equilibrium cell on load balancing direction Amount subtracts the load that selected user equipment obtains after the load of the source equilibrium cell；

In possible implementation, third processing module is also used to:

In possible implementation, Second processing module is also used to:

In possible implementation, Second processing module is specifically used for:

In the embodiment of the present invention six, provide a kind of base station, as shown in fig. 6, the base station include transceiver 61 and with this At least one processor 62 that transceiver 61 connects, in which:

Processor 62 executes the polymerization of carrier wave described in above-described embodiment one for reading the program in memory 63 Each step in load equalization method in system, referring specifically to the associated description in embodiment one, details are not described herein again；

Transceiver 61, for sending and receiving data under the control of processor 62.

Wherein, in Fig. 6, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor 62 The various circuits for the memory that the one or more processors and memory 63 of representative represent link together.Bus architecture may be used also To link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, these are all It is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 61 can be with It is multiple element, that is, includes transmitter and transceiver, the unit for communicating over a transmission medium with various other devices is provided. Processor 62 is responsible for management bus architecture and common processing, and memory 63 can store processor 62 to be made when executing operation Data.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. the load equalization method in a kind of carrier aggregation system, which is characterized in that this method comprises:

Within each load balancing period, the source equilibrium cell for needing to carry out load balancing and the source equilibrium cell are determined Load balancing direction, and from the corresponding member carrier cell of the source equilibrium cell, determine the source equilibrium cell At least one target equilibrium cell for arriving of load balancing；

Determine that the source equilibrium cell needs to shift to each target equilibrium cell on the load balancing direction first is negative Lotus amount；

According to corresponding first load of each target equilibrium cell, from the polymerization of support load balancing direction carrier wave and with institute It states in the user equipment that equilibrium cell in source is main plot PCell, selects at least one user equipment, and selected user is set It is standby on the secondary cell SCell that the load in the source equilibrium cell is transferred to selected user equipment so that each mesh It marks the accumulative load received of balanced cell and reaches corresponding first load of target equilibrium cell, wherein be selected User device configuration and activate SCell be at least one of the target equilibrium cell determined.

2. the method as described in claim 1, which is characterized in that within each load balancing period, determine to be born The load balancing direction of the source equilibrium cell of lotus equilibrium and the source equilibrium cell, comprising:

The cell that uplink load amount is greater than the absolute thresholding of setting is determined as the source equilibrium cell, and determines the load Equilibrium direction is uplink；Or the cell that downlink load amount is greater than the absolute thresholding is determined as the source equilibrium cell, and Determine that the load balancing direction is downlink；

Or

It determines that uplink load amount is greater than the cell of the absolute thresholding of setting, the highest cell of uplink load amount is determined as described Source equilibrium cell, and determine that the load balancing direction is uplink；Or determine that downlink load amount is greater than the absolute of setting The highest cell of downlink load amount is determined as the source equilibrium cell, and determines the load balancing side by the cell of thresholding To for downlink.

3. method according to claim 2, which is characterized in that when the source equilibrium cell determined is multiple, if any source The uplink load amount and downlink load amount of balanced cell are all larger than the absolute thresholding, determine the load of the source equilibrium cell Equilibrium direction, comprising:

By the corresponding load balancing direction of maximum value in the uplink load amount and downlink load amount of any source equilibrium cell, really It is set to the load balancing direction of any source equilibrium cell.

4. method according to claim 2, which is characterized in that from the corresponding member carrier cell of the source equilibrium cell, Determine the target equilibrium cell that the load balancing of the source equilibrium cell is arrived, comprising:

From the corresponding member carrier cell of the source equilibrium cell, select on the load balancing direction load by from it is small to Big sequence comes the member carrier cell of top n, as candidate target equilibrium cell, wherein N is whole more than or equal to 1 Number；

From N number of candidate target equilibrium cell, select load negative lower than the height of the load of the source equilibrium cell and setting Minimum value in lotus thresholding, and the difference of the load of load cell balanced with the source is greater than the time of the relative threshold of setting Target equilibrium cell is selected, as target equilibrium cell.

5. the method as described in claim 1, which is characterized in that determine the source equilibrium cell on the load balancing direction Need the first load shifted to each target equilibrium cell, comprising:

It is equal according to the load of load balancing opisthogenesis equilibrium cell and target equilibrium cell on the load balancing direction Principle determines that the source equilibrium cell can be to the second of each target equilibrium cell equilibrium on the load balancing direction Load；And it is less than or equal to according to load of the target equilibrium cell after load balancing on the load balancing direction and is set The principle of fixed high load capacity thresholding determines that each target equilibrium cell allows the source balanced on the load balancing direction The third load that cell is shifted to the target equilibrium cell；

For each target equilibrium cell, from second load and the third load, the smallest load of selective value Amount is determined as the first load that the source equilibrium cell needs to shift to the target equilibrium cell on the load balancing direction Amount.

6. the method as described in claim 1, which is characterized in that from the polymerization of support load balancing direction carrier wave and with described Equilibrium cell in source is to select at least one user equipment in the user equipment of PCell, comprising:

From first set, at least one user equipment is selected, so that it is balanced in the source to displaced selected user equipment The load that each target equilibrium cell receives after load in cell reaches the target equilibrium cell corresponding first Load；

It wherein, include supporting up direction and downlink side in the first set if the load balancing direction is up direction To carrier wave polymerization, with the source equilibrium cell for PCell and at least one configured target equilibrium cell is the user The up direction of equipment and the SCell of down direction but the user equipment for not yet activating SCell, and support up direction under The carrier wave polymerization of line direction, with the source equilibrium cell for PCell and at least one configured target equilibrium cell is described The user equipment of the SCell of the down direction of user equipment；

It include at least supporting the carrier wave of down direction poly- in the first set if the load balancing direction is down direction It closes, with the source equilibrium cell for PCell and at least one configured target equilibrium cell is the user equipment SCell but the user equipment for not yet activating SCell.

7. method as claimed in claim 6, which is characterized in that after selecting at least one user equipment, by selected use Before family equipment is on the SCell that the load in the source equilibrium cell is transferred to selected user equipment, further includes:

If the load balancing direction is up direction, at least one configured for what is selected from the first set mesh The user equipment that balanced cell is the up direction of the user equipment and the SCell of down direction but not yet activates SCell is marked, Activate the SCell of selected user equipment；Or at least one configured mesh for what is selected from the first set The user equipment for marking the SCell for the down direction that balanced cell is the user equipment, is reconfigured by RRC to selected use The SCell progress up direction of family equipment and reconfiguring for down direction, and activate the SCell of the user equipment after reconfiguring；

If the load balancing direction is down direction, to the user equipment selected from the first set, selected by activation User equipment SCell.

8. method as claimed in claim 6, which is characterized in that from the polymerization of support load balancing direction carrier wave and with described Equilibrium cell in source is to select at least one user equipment in the user equipment of PCell, further includes:

If displaced all user equipmenies in the first set after the load in the source equilibrium cell, there are still The accumulative load received of at least one target equilibrium cell is not up to corresponding first load of target equilibrium cell, from In second set, at least one user equipment is selected, so that load of the selected user equipment in the source equilibrium cell The sum of amount is greater than or equal to remaining balanced load amount of the source equilibrium cell on the load balancing direction, wherein described Remaining balanced load amount of the equilibrium cell in source on the load balancing direction is that each target equilibrium cell is corresponding first negative The sum of lotus amount subtracts the load that each received load of target equilibrium cell obtains；

It wherein, include supporting up direction and downlink side in the second set if the load balancing direction is up direction To carrier wave polymerization, with the source equilibrium cell be PCell, not yet configuration either objective equilibrium cell is the user equipment SCell and the user equipment for not yet reporting A2 measurement report, and support up direction and down direction carrier wave polymerization, with The source equilibrium cell is PCell, not yet configuration either objective equilibrium cell is the SCell of the user equipment and reports The user equipment of A2 measurement report；

It include at least supporting the carrier wave of down direction poly- in the second set if the load balancing direction is down direction It closes, with the source equilibrium cell be PCell, the SCell and not that not yet configuration either objective equilibrium cell is the user equipment The user equipment of A2 measurement report is reported, and at least supports the carrier wave polymerization of down direction, be with the source equilibrium cell PCell, not yet configuration either objective equilibrium cell are the SCell of the user equipment and have reported the user of A2 measurement report Equipment.

9. method according to claim 8, which is characterized in that after selecting at least one user equipment, by selected use Before family equipment is on the SCell that the load in the source equilibrium cell is transferred to selected user equipment, further includes:

If the load balancing direction is up direction, A2 measurement report is not yet reported for what is selected from the second set User equipment, configure selected user equipment and carry out SCell measurement, according to the measurement report of selected user equipment to report It accuses, the target equilibrium cell for selecting current load amount minimum from the target equilibrium cell for meeting SCell configuration condition is as institute The SCell of the user equipment of selection carries out the reconfiguration of up direction and down direction to the SCell of selected user equipment It sets, and activates the SCell of the user equipment after reconfiguring；A2 measurement report has been reported for what is selected from the second set User equipment, it is small from the target equilibrium for meeting SCell configuration condition according to the measurement report of selected user equipment to report SCell of the target equilibrium cell for selecting current load amount minimum in area as selected user equipment, to selected use The SCell progress up direction of family equipment and reconfiguring for down direction, and activate the SCell of the user equipment after reconfiguring；

If the load balancing direction is down direction, A2 measurement report is not yet reported for what is selected from the second set User equipment, configure selected user equipment and carry out SCell measurement, according to the measurement report of selected user equipment to report It accuses, the target equilibrium cell for selecting current load amount minimum from the target equilibrium cell for meeting SCell configuration condition is as institute The SCell of the user equipment of selection carries out down direction to the SCell of selected user equipment and reconfigures, and activates reconfiguration The SCell of the user equipment postponed；For the user equipment for having reported A2 measurement report selected from the second set, root According to the measurement report of selected user equipment to report, selected from the target equilibrium cell for meet SCell configuration condition current SCell of the minimum target equilibrium cell of load as selected user equipment, to the SCell of selected user equipment It carries out down direction to reconfigure, and activates the SCell of the user equipment after reconfiguring.

10. method according to claim 8, which is characterized in that this method further include:

If displaced all user equipmenies in the second set after the load in the source equilibrium cell, the source The difference of the absolute thresholding of remaining load and setting of the balanced cell on the load balancing direction is less than the offset of setting Amount, from third set, selects at least one user equipment, until the source equilibrium cell is on the load balancing direction Remaining load is less than or equal to absolute thresholding or the source equilibrium cell the remaining on the load balancing direction of setting Remaining balanced load amount is 0 or has selected all user equipmenies in the third set, wherein the source equilibrium cell exists Remaining load on the load balancing direction is initial load of the source equilibrium cell on the load balancing direction Amount subtracts the load that selected user equipment obtains after the load of the source equilibrium cell；

It wherein, include not supporting the load balancing side in the third set if the load balancing direction is up direction To carrier wave polymerization but support the opposite direction carrier wave in the load balancing direction to polymerize, with the source equilibrium cell for PCell and At least one configured target equilibrium cell is SCell of the user equipment on the opposite direction in the load balancing direction But still unactivated user equipment；The carrier wave in the load balancing direction is not supported to polymerize but support the load balancing direction Opposite direction carrier wave polymerize or do not support carrier wave polymerization, with the source equilibrium cell be PCell, not yet configuration either objective equilibrium it is small Area is the SCell of the user equipment and does not report the user equipment of A2 measurement report；The load balancing direction is not supported Carrier wave polymerize but supports the opposite direction of load balancing direction carrier wave polymerization or carrier wave is not supported to polymerize, is small with the source equilibrium Area is PCell, not yet configuration either objective equilibrium cell is the SCell of the user equipment and has reported A2 measurement report User equipment；It does not support the carrier wave in the load balancing direction to polymerize but supports the opposite direction carrier wave in the load balancing direction poly- Close, with the source equilibrium cell be PCell, at least one configured target equilibrium cell is the user equipment in the load SCell and activated user equipment on the opposite direction of equilibrium direction；

It include that carrier wave is not supported to polymerize, is equal with the source in the third set if the load balancing direction is down direction Weighing apparatus cell is PCell and does not report the user equipment of A2 measurement report；Carrier wave polymerization is not supported, is with the source equilibrium cell PCell and the user equipment for having reported A2 measurement report.

11. method as claimed in claim 10, which is characterized in that, will be selected after selecting at least one user equipment Before user equipment is on the SCell that the load in the source equilibrium cell is transferred to selected user equipment, further includes:

At least one configured for what is selected from the third set target equilibrium cell is the user equipment in institute The user equipment for stating the SCell on the opposite direction in load balancing direction determines the configured mesh of selected user equipment It marks the load that balanced cell has received on the opposite direction in the load balancing direction and is less than the target equilibrium cell in institute Stating allows received 4th load on the opposite direction in load balancing direction, carry out at alien frequencies switching to selected user equipment Reason, selected user equipment is switched on its SCell；

For the use that SCell of the either objective equilibrium cell for the user equipment is not configured selected from the third set Family equipment judges selected user according to the measurement report received for selected user device configuration different-frequency measure Equipment meets alien frequencies switching condition, and either objective equilibrium cell has received on the opposite direction in the load balancing direction Load is less than the either objective equilibrium cell allows received 4th load on the opposite direction in the load balancing direction Amount, is switched to the either objective equilibrium cell for selected user equipment.

12. method as claimed in claim 11, which is characterized in that this method further include:

13. method as claimed in claim 12, which is characterized in that determine each target equilibrium cell in the load balancing side To opposite direction on allow received 4th load, comprising:

For each target equilibrium cell, according to the target equilibrium cell after equilibrium on the opposite direction in the load balancing direction Load be less than or equal to setting high load capacity thresholding principle, determine that the target equilibrium cell allows the source balanced The 5th load that cell is shifted to the target equilibrium cell；According to target equilibrium cell in the anti-of the load balancing direction Load on direction is less than or equal to the principle of the absolute thresholding of setting, and it is received to determine that the target equilibrium cell allows 6th load；It is balanced with the source small according to load of the target equilibrium cell on the opposite direction in the load balancing direction The difference of load of the area on the opposite direction in the load balancing direction is less than or equal to the principle of the relative threshold of setting, really Making the target equilibrium cell allows received 7th load；

According to the 5th load, the 6th load and the 7th load, the target equilibrium cell is determined Allow received 4th load on the opposite direction in the load balancing direction.

14. method as claimed in claim 13, which is characterized in that according to the 5th load, the 6th load and 7th load determines the target equilibrium cell in the opposite direction in the load balancing direction according to following formula It is upper to allow received 4th load:

Wherein, Δ_{1_i}Indicate corresponding 4th load of i-th of target equilibrium cell, Δ_{1,1_i}Indicate i-th of target equilibrium cell Corresponding 5th load, Δ_{2,1_i}Indicate corresponding 6th load of i-th of target equilibrium cell, Δ_{3,1_i}Indicate i-th of mesh Mark corresponding 7th load of balanced cell, Eff_CC1Indicate the source equilibrium cell in the opposite direction in the load balancing direction Cell spectrum efficiency, Eff_CCiIndicate i-th of target equilibrium cell in the cell spectrum of the opposite direction in the load balancing direction Efficiency, N_{PRB_CC1}Indicate that the source equilibrium cell can use the number of PRB in the bandwidth of the opposite direction in the load balancing direction, N_{PRB_CCi}Indicate that i-th of target equilibrium cell can use the number of PRB, i=in the bandwidth of the opposite direction in the load balancing direction 2 ..., L+1, wherein the total number of L expression target equilibrium cell.

15. method as claimed in claim 10, which is characterized in that if the number of the user equipment selected from the second set M₂> 0, and the number M of the user equipment from the third Resource selection₃=0, then the total number M of selected user equipment are as follows: M =M₁+MIN(M₂*α,M_{2_final}), wherein M₁Number for the user equipment selected from the first set, α are putting for setting The big factor, α >=1, M_{2_final}Total number for the user equipment for including in the second set；

If the number M of the user equipment selected from the second set₂> 0, and from the user equipment of the third Resource selection Number M₃> 0, then the total number M of selected user equipment are as follows: M=M₁+M₂+MIN(M₂*(α-1)+M₃*α,M_{3_final}), wherein M_{3_final}Total number for the user equipment for including in the third set.

16. the load balancing device in a kind of carrier aggregation system, which is characterized in that the device includes:

First processing module, for determining the source equilibrium cell for needing to carry out load balancing within each load balancing period And the load balancing direction of the source equilibrium cell, and from the corresponding member carrier cell of the source equilibrium cell, really Make at least one target equilibrium cell that the load balancing of the source equilibrium cell is arrived；

Second processing module needs on the load balancing direction to each target equilibrium for determining the source equilibrium cell First load of cell transfer；

Third processing module is used for according to corresponding first load of each target equilibrium cell, from the support load balancing Direction carrier wave polymerize and using the source equilibrium cell as in the user equipment of main plot PCell, selects at least one user equipment, And load of the selected user equipment in the source equilibrium cell is transferred to the secondary cell of selected user equipment On SCell, so as to reach the target equilibrium cell corresponding first negative for the accumulative load received of each target equilibrium cell Lotus amount, wherein the SCell for selected user device configuration and activation is at least one in the target equilibrium cell determined It is a.

17. device as claimed in claim 16, which is characterized in that first processing module is specifically used for:

Or

18. device as claimed in claim 17, which is characterized in that first processing module is specifically used for:

When the source equilibrium cell determined is multiple, if the uplink load amount and downlink load amount of any source equilibrium cell are big It is in the absolute thresholding, then maximum value in the uplink load amount and downlink load amount of any source equilibrium cell is corresponding negative Lotus equilibrium direction is determined as the load balancing direction of the source equilibrium cell.

19. device as claimed in claim 17, which is characterized in that first processing module is specifically used for:

20. device as claimed in claim 16, which is characterized in that Second processing module is specifically used for:

21. device as claimed in claim 16, which is characterized in that third processing module is specifically used for:

22. device as claimed in claim 21, which is characterized in that third processing module is also used to:

23. device as claimed in claim 21, which is characterized in that third processing module is also used to:

24. device as claimed in claim 23, which is characterized in that third processing module is also used to:

25. device as claimed in claim 23, which is characterized in that third processing module is also used to:

It wherein, include not supporting the load balancing side in the third set if the load balancing direction is up direction To carrier wave polymerization but support the opposite direction carrier wave in the load balancing direction to polymerize, with the source equilibrium cell for PCell and At least one configured target equilibrium cell is SCell of the user equipment on the opposite direction in the load balancing direction But still unactivated user equipment；The carrier wave in the load balancing direction is not supported to polymerize but support the load balancing direction Opposite direction carrier wave polymerize or do not support carrier wave polymerization, with the source equilibrium cell be PCell, not yet configuration either objective equilibrium it is small Area is the SCell of the user equipment and does not report the user equipment of A2 measurement report；The load balancing direction is not supported Carrier wave polymerize but supports the opposite direction carrier wave in the load balancing direction to polymerize or carrier wave is not supported to polymerize, is small with the source equilibrium Area is PCell, not yet configuration either objective equilibrium cell is the SCell of the user equipment and has reported A2 measurement report User equipment；It does not support the carrier wave in the load balancing direction to polymerize but supports the opposite direction carrier wave in the load balancing direction poly- Close, with the source equilibrium cell be PCell, at least one configured target equilibrium cell is the user equipment in the load SCell and activated user equipment on the opposite direction of equilibrium direction；

26. device as claimed in claim 25, which is characterized in that third processing module is also used to:

27. device as claimed in claim 26, which is characterized in that Second processing module is also used to

28. device as claimed in claim 27, which is characterized in that Second processing module is specifically used for:

29. device as claimed in claim 28, which is characterized in that Second processing module is determined described according to following formula Target equilibrium cell allows received 4th load on the opposite direction in the load balancing direction:

30. device as claimed in claim 25, which is characterized in that if the number of the user equipment selected from the second set M₂> 0, and the number M of the user equipment from the third Resource selection₃=0, then the total number M of selected user equipment are as follows: M =M₁+MIN(M₂*α,M_{2_final}), wherein M₁Number for the user equipment selected from the first set, α are putting for setting The big factor, α >=1, M_{2_final}Total number for the user equipment for including in the second set；